82 datasets found
  1. a

    Top 200 Crash Clusters 2019-2021

    • geo-massdot.opendata.arcgis.com
    • gis.data.mass.gov
    Updated Jul 2, 2024
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    Massachusetts geoDOT (2024). Top 200 Crash Clusters 2019-2021 [Dataset]. https://geo-massdot.opendata.arcgis.com/datasets/MassDOT::top-200-crash-clusters-2019-2021/about
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    Dataset updated
    Jul 2, 2024
    Dataset authored and provided by
    Massachusetts geoDOT
    Area covered
    Description

    The top 200 locations where reported collisions occurred at intersections have been identified. The crash cluster analysis methodology for the top intersection clusters uses a fixed meter search distance of 25 meters (82 ft.) to merge crash clusters together. This analysis was based on crashes where a police officer specified one of the following junction types: Four way intersection, T-intersection, Y-intersection, five point or more. Furthermore, the methodology uses the Equivalent Property Damage Only (EPDO) weighting to rank the clusters. EPDO is based any type of injury crash (including fatal, incapacitating, non-incapacitating and possible) having a weighting of 21 compared to a property damage only crash (which has weighting of 1). The clusters were reviewed in descending EPDO order until 200 locations were obtained. The clustering analysis used crashes from the three year period from 2014-2016. The area encompassing the crash cluster may cover a larger area than just the intersection so it is critical to view these spatially.

  2. f

    PG and KG networks intersection analysis.

    • plos.figshare.com
    xls
    Updated Jun 8, 2023
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    Juan A. G. Ranea; Ian Morilla; Jon G. Lees; Adam J. Reid; Corin Yeats; Andrew B. Clegg; Francisca Sanchez-Jimenez; Christine Orengo (2023). PG and KG networks intersection analysis. [Dataset]. http://doi.org/10.1371/journal.pcbi.1000945.t001
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    xlsAvailable download formats
    Dataset updated
    Jun 8, 2023
    Dataset provided by
    PLOS Computational Biology
    Authors
    Juan A. G. Ranea; Ian Morilla; Jon G. Lees; Adam J. Reid; Corin Yeats; Andrew B. Clegg; Francisca Sanchez-Jimenez; Christine Orengo
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    From left to right: the yeast and human data division; Type, real data or random model; Networks, intersections of network models; # Edges, number of protein pairs in the intersections; # Nodes, number of different proteins (nodes) in the intersections; #Ed./#Nod., or network density is ratio of the number of edges divided by the number of nodes; %PGe, percentage of the PG model's edges backed by the KG model. R. 1, p-values random model and R. 2, adjacency random model (see the section: Network randomisation) the randomisation process was realized over the matrix of possible binary associations of all the proteins (nodes) in the PG and KG models. Calculation of intersections for the random models went through 1,000 iterations. For further statistics see Table S2 in Text S1.

  3. Intersection TDA

    • gis-fdot.opendata.arcgis.com
    • hub.arcgis.com
    • +1more
    Updated Jul 19, 2017
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    Florida Department of Transportation (2017). Intersection TDA [Dataset]. https://gis-fdot.opendata.arcgis.com/datasets/intersection-tda
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    Dataset updated
    Jul 19, 2017
    Dataset authored and provided by
    Florida Department of Transportationhttps://www.fdot.gov/
    Area covered
    Description

    The FDOT GIS Intersection feature class provides spatial information on Florida intersections. This information includes intersection direction and surface type. This direction data is required for all roads. The surface type is required for all functionally classified roadways on the SHS and major roadway intersections on HPMS standard sample sections, including Active Off the SHS. This dataset is maintained by the Transportation Data & Analytics office (TDA). The source spatial data for this hosted feature layer was created on: 06/21/2025.For more details please review the FDOT RCI Handbook Download Data: Enter Guest as Username to download the source shapefile from here: https://ftp.fdot.gov/file/d/FTP/FDOT/co/planning/transtat/gis/shapefiles/intersection.zip

  4. Network intersection analysis between PSGN and HDGN or ODGN.

    • plos.figshare.com
    xls
    Updated Jun 3, 2023
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    Armando Reyes-Palomares; Rocío Rodríguez-López; Juan A. G. Ranea; Francisca Sánchez Jiménez; Miguel Angel Medina (2023). Network intersection analysis between PSGN and HDGN or ODGN. [Dataset]. http://doi.org/10.1371/journal.pone.0056653.t004
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    xlsAvailable download formats
    Dataset updated
    Jun 3, 2023
    Dataset provided by
    PLOShttp://plos.org/
    Authors
    Armando Reyes-Palomares; Rocío Rodríguez-López; Juan A. G. Ranea; Francisca Sánchez Jiménez; Miguel Angel Medina
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    aFraction of edges in the intersection respect to the total edges in the union.

  5. i

    Criticality Analysis of Occlusion Phenomenon at T-Intersection

    • ieee-dataport.org
    Updated Dec 18, 2020
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    Lukas Westhofen (2020). Criticality Analysis of Occlusion Phenomenon at T-Intersection [Dataset]. https://ieee-dataport.org/documents/criticality-analysis-occlusion-phenomenon-t-intersection
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    Dataset updated
    Dec 18, 2020
    Authors
    Lukas Westhofen
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    A criticality analysis dataset of the phenomenon occlusion on a T-intersection. Simulation was done using CARLA.

  6. A

    ‘Street Intersections’ analyzed by Analyst-2

    • analyst-2.ai
    Updated Feb 13, 2022
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    Analyst-2 (analyst-2.ai) / Inspirient GmbH (inspirient.com) (2022). ‘Street Intersections’ analyzed by Analyst-2 [Dataset]. https://analyst-2.ai/analysis/data-gov-street-intersections-958e/8076ecc1/?iid=003-399&v=presentation
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    Dataset updated
    Feb 13, 2022
    Dataset authored and provided by
    Analyst-2 (analyst-2.ai) / Inspirient GmbH (inspirient.com)
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Analysis of ‘Street Intersections’ provided by Analyst-2 (analyst-2.ai), based on source dataset retrieved from https://catalog.data.gov/dataset/29a36886-3c07-4883-a034-36ecba64754f on 13 February 2022.

    --- Dataset description provided by original source is as follows ---

    Street Intersections, includes all street names that intersect at an intersection. Street Nodes can have one or street names associated with it.

    --- Original source retains full ownership of the source dataset ---

  7. f

    Analysis of GO data: involvement of intersection nodes in cellular...

    • plos.figshare.com
    xls
    Updated May 31, 2023
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    Tuomas Rönnberg; Kirsi Jääskeläinen; Guillaume Blot; Ville Parviainen; Antti Vaheri; Risto Renkonen; Michele Bouloy; Alexander Plyusnin (2023). Analysis of GO data: involvement of intersection nodes in cellular processes. [Dataset]. http://doi.org/10.1371/journal.pone.0034307.t002
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    xlsAvailable download formats
    Dataset updated
    May 31, 2023
    Dataset provided by
    PLOS ONE
    Authors
    Tuomas Rönnberg; Kirsi Jääskeläinen; Guillaume Blot; Ville Parviainen; Antti Vaheri; Risto Renkonen; Michele Bouloy; Alexander Plyusnin
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    GO terms follow the GO Consortium hierarchy. Higher level (generic) terms are numbered and in bold text, lower level (specific) terms are in regular text.*The cut-off value was set to 1E-4.

  8. f

    Data from: “The sides of a polygon do not intersect” … Delving into the...

    • scielo.figshare.com
    jpeg
    Updated May 30, 2023
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    Leonor Camargo; Patricia Perry (2023). “The sides of a polygon do not intersect” … Delving into the voice of the students [Dataset]. http://doi.org/10.6084/m9.figshare.14304770.v1
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    jpegAvailable download formats
    Dataset updated
    May 30, 2023
    Dataset provided by
    SciELO journals
    Authors
    Leonor Camargo; Patricia Perry
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Abstract We characterized both discursive expressions of three sixth grade students on the phrase intersect each other and the effect they have on the construction of collective and shared meanings of intersection. Recording data, extracting information without losing the context where the interaction is framed, and selecting expressions to analyze were all done by using a classroom-based qualitative strategy. The analysis, following techniques typical of ethnomethodology, was done in terms of: (i) intelligibility and authenticity, (ii) features of the discourse proposed by Sfard and (iii) our conceptualization of collective voice and shared voice. We found a geometry classroom in which student voices are collectively constructed and generate shared meaning about intersection, which is reflected in a punctual discursive transition. The contribution of this paper resides in the use of the discursive features regarded in the analysis to focus the gaze to the discourse on mathematical content.

  9. Intersection and roadway crash rate data for analysis

    • mass.gov
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    Highway Division, Intersection and roadway crash rate data for analysis [Dataset]. https://www.mass.gov/info-details/intersection-and-roadway-crash-rate-data-for-analysis
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    Dataset provided by
    Massachusetts Department of Transportationhttp://www.massdot.state.ma.us/
    Highway Division
    Area covered
    Massachusetts
    Description

    Data analysis worksheets and average crash rates by intersection type and roadway functional classification.

  10. d

    Intersection points used to calculate rate of shoreline change statistics...

    • catalog.data.gov
    • data.usgs.gov
    • +1more
    Updated Jul 6, 2024
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    U.S. Geological Survey (2024). Intersection points used to calculate rate of shoreline change statistics for New York State coastal wetlands [Dataset]. https://catalog.data.gov/dataset/intersection-points-used-to-calculate-rate-of-shoreline-change-statistics-for-new-york-sta
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    Dataset updated
    Jul 6, 2024
    Dataset provided by
    United States Geological Surveyhttp://www.usgs.gov/
    Area covered
    New York
    Description

    This data set contains intersection points used to compute rate of change statistics for New York State coastal wetlands. Analysis was performed in ArcMap 10.5.1 using historical vector shoreline data from the National Oceanic and Atmospheric Administration (NOAA). Rate of change statistics were calculated using the Digital Shoreline Analysis System (DSAS), created by U.S. Geological Survey, version 5.0. End-point rates, calculated by dividing the distance of shoreline movement by the time elapsed between the oldest and the most recent shoreline, were generated for wetlands where fewer than three historic shorelines were available. Linear regression rates, determined by fitting a least-squares regression line to all shoreline points for a particular transect, were used in areas where three or more shorelines were present. A reference baseline was used as the originating point for the orthogonal transects cast by the DSAS software. The transects intersect each shoreline establishing the intersection measurement points presented here, which were then used to calculate the rates.

  11. R

    Intersection Dataset

    • universe.roboflow.com
    zip
    Updated Jun 2, 2023
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    Thesis (2023). Intersection Dataset [Dataset]. https://universe.roboflow.com/thesis-8yadw/intersection-t5pp2/dataset/6
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    zipAvailable download formats
    Dataset updated
    Jun 2, 2023
    Dataset authored and provided by
    Thesis
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Variables measured
    Vehicles Bounding Boxes
    Description

    Here are a few use cases for this project:

    1. Traffic Flow Analysis: The "Intersection" model could be used to monitor and analyze traffic flow at busy intersections. The model can detect various vehicle types and provide data that aids in understanding traffic patterns, congestions, peak hours, and more.

    2. City Transportation Planning: The ability to distinguish between various classes of vehicles makes "Intersection" valuable for city planning departments. They can use the data from this model to make more informed decisions relating to road design, public transportation infrastructure, and vehicular traffic regulation.

    3. Autonomous Vehicle Development: "Intersection" can be a useful tool in developing smarter self-driving cars. The ability to correctly identify various vehicle types can inform decision-making algorithms used in autonomous vehicles, leading to safer and more efficient rides.

    4. Vehicle Based Advertising: For advertising companies, the "Intersection" model can be used to assess the types of vehicles passing through a specific location. This data can guide strategies such as billboard placement or targeted advertisements, focusing on demographic profiles associated with certain vehicle types.

    5. Crash Analytics and Insurance Risk Evaluation: Insurance companies could use the "Intersection" model to analyze accident-prone areas by identifying the types of vehicles typically involved. This information could assist in adjusting insurance premiums or identifying high-risk areas.

  12. A

    ‘Street Closures due to construction activities by Intersection’ analyzed by...

    • analyst-2.ai
    Updated Feb 13, 2022
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    Analyst-2 (analyst-2.ai) / Inspirient GmbH (inspirient.com) (2022). ‘Street Closures due to construction activities by Intersection’ analyzed by Analyst-2 [Dataset]. https://analyst-2.ai/analysis/data-gov-street-closures-due-to-construction-activities-by-intersection-4ba9/3131f1b8/?iid=001-736&v=presentation
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    Dataset updated
    Feb 13, 2022
    Dataset authored and provided by
    Analyst-2 (analyst-2.ai) / Inspirient GmbH (inspirient.com)
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Analysis of ‘Street Closures due to construction activities by Intersection’ provided by Analyst-2 (analyst-2.ai), based on source dataset retrieved from https://catalog.data.gov/dataset/c3166c2c-d13d-4056-8cab-2b16c2e4d881 on 13 February 2022.

    --- Dataset description provided by original source is as follows ---

    DOT Street Closure data identifies locations in the New York City Street Closure map where a street is subject to a full closure, restricting through traffic, for the purpose of conducting construction related activity on a City street. Details about DOT construction permits can be found at Street Works Manual, http://streetworksmanual.nyc/. Full Closure Permits are issued for a period of time during which the street may be closed to through traffic for only a portion of the time, and open at other times.

    Additional information regarding which part of the street and during which period of time it is fully closed is included only on the permit itself.

    --- Original source retains full ownership of the source dataset ---

  13. Iowa Vulnerable Road Users (VRU) - Intersection analysis

    • data.iowadot.gov
    • public-iowadot.opendata.arcgis.com
    • +1more
    Updated Dec 27, 2023
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    Iowa Department of Transportation (2023). Iowa Vulnerable Road Users (VRU) - Intersection analysis [Dataset]. https://data.iowadot.gov/datasets/iowa-vulnerable-road-users-vru-intersection-analysis
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    Dataset updated
    Dec 27, 2023
    Dataset authored and provided by
    Iowa Department of Transportationhttps://iowadot.gov/
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Description

    The Vulnerable Road User Safety Assessment is an assessment of the safety performance of the state of Iowa with respect to vulnerable road users and the plan of the state of Iowa to improve the safety of vulnerable road users. It is required by law and is described under 23 U.S.C. 148(1).The assessment is driven by demographic and performance-related data developed in consultation with local governments that represent high-risk areas. This assessment is used to identify areas of high risk to vulnerable road users, and then utilize that assessment to drive strategy and investment decisions around further safety improvements to mitigate identified safety risks.VRU Safety Assessment GoalsIdentify areas of higher risk for bicyclist and pedestrian crashesProvide insight on areas of necessary infrastructure improvements on Iowa roadsFurther the objective of achieving zero fatalities on the nation’s Roads

  14. I

    Intersection Violation Systems Report

    • datainsightsmarket.com
    doc, pdf, ppt
    Updated Dec 24, 2024
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    Data Insights Market (2024). Intersection Violation Systems Report [Dataset]. https://www.datainsightsmarket.com/reports/intersection-violation-systems-713624
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    ppt, doc, pdfAvailable download formats
    Dataset updated
    Dec 24, 2024
    Dataset authored and provided by
    Data Insights Market
    License

    https://www.datainsightsmarket.com/privacy-policyhttps://www.datainsightsmarket.com/privacy-policy

    Time period covered
    2025 - 2033
    Area covered
    Global
    Variables measured
    Market Size
    Description

    Market Size and Growth: The global Intersection Violation Systems market is projected to experience substantial growth in the coming years, driven by increasing traffic congestion and the need for enhanced road safety. The market size is estimated to reach USD XX million by 2033, growing at a CAGR of XX% from 2025 to 2033. The rise in traffic accidents at intersections, along with the increasing adoption of advanced traffic management systems, is fueling the demand for efficient intersection violation detection solutions. Drivers, Trends, and Restraints: Key drivers of the market include government regulations mandating the implementation of traffic safety technologies, advancements in sensor technologies and artificial intelligence, and the growing focus on smart cities. Major trends shaping the market are the increasing proliferation of connected vehicles and the adoption of cloud-based services for traffic management. However, factors such as high installation and maintenance costs, data privacy concerns, and regulatory complexities may act as restraints to market growth. The market is segmented by application (city road, highway, others), type (3MP, 5MP, 9MP, others), and region. Prominent players in the market include Hikvision, AxxonSoft, Vehant Technologies, and Dell Technologies.

  15. Safety Pedestrian Intersection

    • data.iowadot.gov
    Updated Nov 4, 2020
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    Iowa Department of Transportation (2020). Safety Pedestrian Intersection [Dataset]. https://data.iowadot.gov/datasets/safety-pedestrian-intersection
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    Dataset updated
    Nov 4, 2020
    Dataset authored and provided by
    Iowa Department of Transportationhttps://iowadot.gov/
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Description

    General Description of Systemic Safety Analysis

    The systemic safety approach “involves widely implemented improvements based on high-risk roadway features correlated with specific severe crash types. The approach provides a more comprehensive method for safety planning and implementation that supplements and complements traditional site analysis.” The systemic approach gives agencies another tool to address safety by allowing them to consider the risk of a site instead of its crash history. The general attributes of a systemic safety analysis include:

    Identifying focus crash types and risk factors

    • Agencies need to identify a crash type to focus on, based on either statewide data or on an area identified in prior planning activities such as the State Strategic Highway Safety Plan (SHSP). Often the crashes associated with a focused crash types are randomly distributed across a network with few locations experiencing a cluster of crashes. For this analysis the focus was on bicyclist and pedestrian involved crashes.

    • Defining risk factors

    • After identifying a focus crash type, agencies associate those crashes with roadway or intersection characteristics. This association helps identify roadway characteristics that are correlated with a higher frequency or rate of that crash type. These characteristics, also known as risk factors, can be used to identify and prioritize similar locations where no crash history currently exists.

    • Screening and prioritizing the network

    • Risk factors (or roadway characteristics) are typically scored and weighted by agencies. This process of prioritizing characteristics allows agencies to take that information in combination and find areas within their roadway network that have higher concentrations of risk factors.

    • The resulting analysis identified roadways and intersections that have the greatest risk, regardless of existing crash history at those locations. Agencies can use this information to help select appropriate countermeasures and prioritize projects.

    Data Used in this analysis

    • Crash Data

    • Ten years of crash data from 2009-2018 was used in this analysis. Only non-motorists crashes involving pedestrians, skaters, those using a personal conveyance, wheelchair occupants, bicyclists, and bicycle passengers were included in the analysis. Data as accessed July 8th, 2019.

    • Intersection Data

    • All paved intersections within the state were analyzed by utilizing the department’s intersection database. The only intersections not included in this analysis were intersections on unpaved roads and intersections with more unpaved legs than paved. The intersection database was developed by Iowa State University’s Institute for Transportation (InTrans) from 2013 to 2017 using roadway data, aerial imagery, and Google Streetview images. The version of the database used in this analysis was last updated on April 2017.

    Feature Class Description

    The intersection data contained in this feature class includes all of the intersections within the state of Iowa that had at least half of the legs paved. Each intersection has been analyzed according to the general process described above and for this particular feature class the focus was on pedestrians. The primary output of this analysis was a composite score from 0-100 for each intersection. This score indicates the relative risk of the intersection as it relates to the attributes used in this analysis. The lower the composite score the higher the risk. Higher composite score rankings suggest less risk at those sites. For rural pedestrian intersections the minimum composite score was 20, the max was 87.1, and the average was 60.2. For the urban pedestrian score the minimum composite score was 22.3, the maximum 100, and the average was 83.8.

  16. f

    Model 3 summary.

    • plos.figshare.com
    xls
    Updated Jan 19, 2024
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    Jennifer W. He; Amanda L. Terry; Dan Lizotte; Greta Bauer; Bridget L. Ryan (2024). Model 3 summary. [Dataset]. http://doi.org/10.1371/journal.pone.0296657.t002
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    xlsAvailable download formats
    Dataset updated
    Jan 19, 2024
    Dataset provided by
    PLOS ONE
    Authors
    Jennifer W. He; Amanda L. Terry; Dan Lizotte; Greta Bauer; Bridget L. Ryan
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    BackgroundDespite the Canadian healthcare system’s commitment to equity, evidence for disparate access to primary care (PC) providers exists across individual social identities/positions. Intersectionality allows us to reflect the realities of how social power shapes healthcare experiences at an individual’s interdependent and intersecting social identities/positions. The objectives of this study were to determine: (1) the extent to which intersections can be used classify those who had/did not have a PC provider; (2) the degree to which each social identity/position contributes to the ability to classify individuals as having a PC provider; and (3) predicted probabilities of having a PC provider for each intersection.Methods and findingsUsing national cross-sectional data from 241,445 individuals in Canada aged ≥18, we constructed 320 intersections along the dimensions of gender, age, immigration status, race, and income to examine the outcome of whether one had a PC provider. Multilevel analysis of individual heterogeneity and discriminatory accuracy, a multi-level model using individual-level data, was employed to address intersectional objectives. An intra-class correlation coefficient (ICC) of 23% (95%CI: 21–26%) suggests that these intersections could, to a very good extent, explain individual variation in the outcome, with age playing the largest role. Not all between-intersection variance in this outcome could be explained by additive effects of dimensions (remaining ICC: 6%; 95%CI: 2–16%). The highest intersectional predicted probability existed for established immigrant, older South Asian women with high income. The lowest intersectional predicted probability existed for recently immigrated, young, Black men with low income.ConclusionsDespite a “universal” healthcare system, our analysis demonstrated a substantial amount of inequity in primary care across intersections of gender, age, immigration status, race, and income.

  17. Analysis parameters.

    • plos.figshare.com
    xls
    Updated May 31, 2023
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    Emiliano Torre; Carlos Canova; Michael Denker; George Gerstein; Moritz Helias; Sonja Grün (2023). Analysis parameters. [Dataset]. http://doi.org/10.1371/journal.pcbi.1004939.t002
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    xlsAvailable download formats
    Dataset updated
    May 31, 2023
    Dataset provided by
    PLOShttp://plos.org/
    Authors
    Emiliano Torre; Carlos Canova; Michael Denker; George Gerstein; Moritz Helias; Sonja Grün
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    Parameters of the ASSET method employed for the analysis of stochastic and network data. Each column shows the parameters employed for the corresponding step of the method.

  18. d

    Analysis Neighborhoods to ZIP Code Crosswalk

    • catalog.data.gov
    • data.sfgov.org
    Updated Mar 29, 2025
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    data.sfgov.org (2025). Analysis Neighborhoods to ZIP Code Crosswalk [Dataset]. https://catalog.data.gov/dataset/analysis-neighborhoods-to-zip-code-crosswalk
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    Dataset updated
    Mar 29, 2025
    Dataset provided by
    data.sfgov.org
    Description

    A. SUMMARY This dataset contains the list of intersecting Analysis Neighborhoods and ZIP Codes for the City and County of San Francisco. It can be used to identify which ZIP codes overlap with Analysis Neighborhoods and vice verse. B. HOW THE DATASET IS CREATED The dataset was created with a spatial join between the Analysis Neighborhoods and ZIP codes. C. UPDATE PROCESS This is a static dataset D. HOW TO USE THIS DATASET This dataset is a many-to-many relationship between analysis neighborhoods and ZIP codes. A single neighborhood can contain or intersect with multiple ZIP codes and similarly, a single ZIP code can be in multiple neighborhoods. This dataset does not contain geographic boundary data (i.e. shapefiles/ GEOMs). The datasets below containing geographic boundary data should be used for analysis of data with geographic coordinates. E. RELATED DATASETS Analysis Neighborhoods San Francisco ZIP Codes Supervisor District (2022) to ZIP Code Crosswalk Analysis Neighborhoods - 2020 census tracts assigned to neighborhoods

  19. Safety Bicyclist Intersection

    • arc-gis-hub-home-arcgishub.hub.arcgis.com
    • data.iowadot.gov
    Updated Nov 4, 2020
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    Iowa Department of Transportation (2020). Safety Bicyclist Intersection [Dataset]. https://arc-gis-hub-home-arcgishub.hub.arcgis.com/maps/IowaDOT::safety-bicyclist-intersection
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    Dataset updated
    Nov 4, 2020
    Dataset authored and provided by
    Iowa Department of Transportationhttps://iowadot.gov/
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Description

    General Description of Systemic Safety Analysis

    The systemic safety approach “involves widely implemented improvements based on high-risk intersection features correlated with specific severe crash types. The approach provides a more comprehensive method for safety planning and implementation that supplements and complements traditional site analysis.” The systemic approach gives agencies another tool to address safety by allowing them to consider the risk of a site instead of its crash history. The general attributes of a systemic safety analysis include:

    Identifying focus crash types and risk factors

    • Agencies need to identify a crash type to focus on, based on either statewide data or on an area identified in prior planning activities such as the State Strategic Highway Safety Plan (SHSP). Often the crashes associated with a focused crash types are randomly distributed across a network with few locations experiencing a cluster of crashes. For this analysis the focus was on bicyclist and pedestrian involved crashes.

    • Defining risk factors

    • After identifying a focus crash type, agencies associate those crashes with roadway or intersection characteristics. This association helps identify roadway characteristics that are correlated with a higher frequency or rate of that crash type. These characteristics, also known as risk factors, can be used to identify and prioritize similar locations where no crash history currently exists.

    • Screening and prioritizing the network

    • Risk factors (or roadway characteristics) are typically scored and weighted by agencies. This process of prioritizing characteristics allows agencies to take that information in combination and find areas within their roadway network that have higher concentrations of risk factors.

    The resulting analysis identified roadways and intersections that have the greatest risk, regardless of existing crash history at those locations. Agencies can use this information to help select appropriate countermeasures and prioritize projects.

    Data Used in this analysis

    • Crash Data

    • Ten years of crash data from 2009-2018 was used in this analysis. Only non-motorists crashes involving pedestrians, skaters, those using a personal conveyance, wheelchair occupants, bicyclists, and bicycle passengers were included in the analysis. Data as accessed July 8th, 2019.

    • Intersection Data

    • All paved intersections within the state were analyzed by utilizing the department’s intersection database. The only intersections not included in this analysis were intersections on unpaved roads and intersections with more unpaved legs than paved. The intersection database was developed by Iowa State University’s Institute for Transportation (InTrans) from 2013 to 2017 using roadway data, aerial imagery, and Google Streetview images. The version of the database used in this analysis was last updated on April 2017.

    Feature Class Description

    The intersection data contained in this feature class includes all of the intersections within the state of Iowa that had at least half of the legs paved. Each intersection has been analyzed according to the general process described above and for this particular feature class the focus was on bicyclist. The primary output of this analysis was a composite score from 0-100 for each intersection. This score indicates the relative risk of the intersection as it relates to the attributes used in this analysis. The lower the composite score the higher the risk. Higher composite score rankings suggest less risk at those sites. For rural bicyclist intersections the minimum composite score was 12.9, the max was 87.1, and the average was 64.0. For the urban bicyclist score the minimum composite score was 14.2, the maximum 100, and the average was 78.9.

  20. f

    Significance of the number of edges at the resulting intersection in the...

    • plos.figshare.com
    xls
    Updated Jun 9, 2023
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    Armando Reyes-Palomares; Rocío Rodríguez-López; Juan A. G. Ranea; Francisca Sánchez Jiménez; Miguel Angel Medina (2023). Significance of the number of edges at the resulting intersection in the network analysis comparison. [Dataset]. http://doi.org/10.1371/journal.pone.0056653.t007
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    xlsAvailable download formats
    Dataset updated
    Jun 9, 2023
    Dataset provided by
    PLOS ONE
    Authors
    Armando Reyes-Palomares; Rocío Rodríguez-López; Juan A. G. Ranea; Francisca Sánchez Jiménez; Miguel Angel Medina
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    All calculations were performed using NeAT [28]. The query is PSGN and used reference corresponds to each biomolecular interactomes. In bold, those significant p-values.aThe limit of precision for the hypergeometric test.

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Massachusetts geoDOT (2024). Top 200 Crash Clusters 2019-2021 [Dataset]. https://geo-massdot.opendata.arcgis.com/datasets/MassDOT::top-200-crash-clusters-2019-2021/about

Top 200 Crash Clusters 2019-2021

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Dataset updated
Jul 2, 2024
Dataset authored and provided by
Massachusetts geoDOT
Area covered
Description

The top 200 locations where reported collisions occurred at intersections have been identified. The crash cluster analysis methodology for the top intersection clusters uses a fixed meter search distance of 25 meters (82 ft.) to merge crash clusters together. This analysis was based on crashes where a police officer specified one of the following junction types: Four way intersection, T-intersection, Y-intersection, five point or more. Furthermore, the methodology uses the Equivalent Property Damage Only (EPDO) weighting to rank the clusters. EPDO is based any type of injury crash (including fatal, incapacitating, non-incapacitating and possible) having a weighting of 21 compared to a property damage only crash (which has weighting of 1). The clusters were reviewed in descending EPDO order until 200 locations were obtained. The clustering analysis used crashes from the three year period from 2014-2016. The area encompassing the crash cluster may cover a larger area than just the intersection so it is critical to view these spatially.

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