It contains the full detail layer of the extents for certified speed limit records from 26 May 2022 onwards, and their associated attribute data.Previously, 68 different road controlling authorities (RCAs) published this information in multiple formats.You can use the data for:time-based analysisanalysis against other datasets, for example addressesbuilding additional datasets.The data is extracted from the NSLR on a nightly basis.New emergency speed limits are updated in this dataset shortly after being created in the NSLR.Note: speed limit record geometries (shapefiles) will overlap. This will be in addition to overpasses, underpasses, intersections, bus lanes, opposing speed differences and multiple speeds in the same direction. For example, if you have an overpass one speed limit will be given for the top level (bridge) and the second overlapping geometry for the bottom level (I.e. road under bridge).Permanent speed limit: A speed limit that’s in force except when a seasonal, variable, temporary - emergency or other temporary speed limit is in force.Variable speed limit: A speed limit that changes under certain conditions (excluding seasonal), for example due to the presence of a school where the speed limit is different at certain times of the day depending on the school activity.Seasonal speed limit: A speed limit that applies on a seasonal basis, for example during a holiday period. Seasonal speed limits can be one-off or recurring.Emergency speed limit: A speed limit put in place due to an emergency, for example an earthquake, tsunami or epidemic.The principles for how the speed limits interact with each other are as follows.Permanent and variable speed limits cannot overlap one another.A seasonal speed limit can overlap permanent and variable speed limits.A seasonal speed limit can overlap another seasonal speed limit, as long as the speed limit is not active at the same time as the record it is overlapping (i.e.one seasonal speed limit cannot overlap another seasonal speed limit).An emergency record can overlap a seasonal record but cannot overlap another emergency record.Temporary speed limits, other than emergency, are not included in this dataset.Members of the public can search for speed limits on New Zealand roads, obtain details of specific speed limits and obtain certified copies of speed limits through the NSLR web application. NSLR web browser applicationData reuse caveatsAs per license.Data quality statementRCAs signed off that the data in the NSLR is a true and accurate reflection of their bylaw. There is a high level of confidence in data quality, and we welcome user feedback.Data quality caveatsThe data has been migrated as provided by respective RCAs according to their current bylaw. There are errors as a result of having to migrate the legal speed limits as per the bylaw rather than what is signed on the ground. Many (but not all) of these were identified and RCAs can apply for Director’s approval to fix them.There is two known issues with the display of this data in Open Data, these are display issues within the Open Data application and do not impact the data when downloaded or used via API:Where there is no date 'December 31, 1969' is shown.Where there is no text 'null' is shown

The Speed Limit (Posted) dataset represents the speed limit information, as posted, along county roads. This line dataset was created as a secondary dataset from posted speed limit signs in the Signs dataset. The features in this dataset are categorized based on Speed and Road segment, where a new road segment is created at every intersection. The source of this road data was the most current avialable NJOIT road centerline data, which existed at the time of data creation in 2014. This dataset includes data based on signs that were visible and able to be digitized from spring of 2014 street level imagery in conjunction with 2012 ortho imagery. The scope of this street level imagery collection was constrained to the understood limits of county owned roads as defined by the Middlesex County Office of Engineering and supplementary NJDOT road ownership data. Most features in this dataset are owned and maintained by the County, but this cannot be assumed.This dataset was developed as a reference and may not accurately represent the beginning and end point of the maximum posted speed. In addition, in some locations the posted speed limit was different on the left and right side of a two-way road. Since these roads were represented as a single line feature, only the maximum posted speed limit was captured along these segments. Reduce Speed signs around curves and for other reasons were not taken into account. Assumptions about continuation of speed limit along road segment were made in certain places where signing is scarse or incomplete. A value of 0 was applied in the Speed attribute field and noted where no posted speed limit signs were found.Compare to NJDOT speed limit table and Middlesex County Office of Engineering speed limit paper records for information.

This data set is a linear representation of the extents and attribution associated with speed limit as derived from speed zone records as originally created by the Traffic Engineering Division (TED) of VDOT. This data layer was created for Speed Zone application of Roadway Network System by extracting the zone location information for each feature from the speed zone database and then applying this location description to the linear referencing system built for the Virginia roadway network, and then associating the zone business data to the spatially located feature. Over time new speed zones are created that may overlap - supersede an existing zone. This layer uses business rules to calculate the speed limit. A conventional zone and a variable limit may exist at a single selected location. This data set is maintained by RNS application. There are two types of SPZ records first are for "Statutory" zones where signs are erected to mark roads on which the statutory speed limits apply. The second type of zone is "Resolution" in which the VDOT Commissioner approves changes in speed limits based on recommendations from TED following traffic studies at the proposed location. In these cases the speed limit may be set to any recommended value, in 5 mph increments, and with differing speed limits for trucks versus other vehicles, different speed limits based on time of day, etc.

The North American Roads dataset was compiled on October 27, 2020 from the Bureau of Transportation Statistics (BTS) and is part of the U.S. Department of Transportation (USDOT)/Bureau of Transportation Statistics (BTS) National Transportation Atlas Database (NTAD). This dataset contains geospatial information regarding major roadways in North America. The data set covers the 48 contiguous United States plus the District of Columbia, Alaska, Hawaii, Canada and Mexico. The nominal scale of the data set is 1:100,000. The data within the North American Roads layer is a compilation of data from Natural Resources Canada, USDOT’s Federal Highway Administration, and the Mexican Transportation Institute. North American Roads is a digital single-line representation of major roads and highways for Canada, the United States, and Mexico with consistent definitions by road class, jurisdiction, lane counts, speed limits and surface type.

Legal Speed Limit (State and Local Roads)The maximum speed limit allowed under the provisions of the State Traffic Act and Regulations. Road speed limits are used to regulate the speed of road vehicles. Speed limits may define maximum (which may be variable), minimum or no speed limit and are normally indicated using a traffic sign. Speed limits are set by the Commissioner of Main Roads Western Australia (Regulation 297 of the Road Traffic Code 2000) and enforced by national or regional police and/or judicial bodies.This layer shows the location of legal speed limits on all public access roads found in the Integrated Road Information System (IRIS) and is provided for information only.Note that you are accessing this data pursuant to a Creative Commons (Attribution) Licence which has a disclaimer of warranties and limitation of liability. You accept that the data provided pursuant to the Licence is subject to changes.Pursuant to section 3 of the Licence you are provided with the following notice to be included when you Share the Licenced Material:- The Commissioner of Main Roads is the creator and owner of the data and Licenced Material, which is accessed pursuant to a Creative Commons (Attribution) Licence, which has a disclaimer of warranties and limitation of liability.Creative Commons CC BY 4.0 https://creativecommons.org/licenses/by/4.0/

The State Road Speed Limits dataset contains posted speed zone data relating to Tasmanian State Highways and Subsidiary Roads. It reflects the State's regulatory speed limit for each section of …Show full descriptionThe State Road Speed Limits dataset contains posted speed zone data relating to Tasmanian State Highways and Subsidiary Roads. It reflects the State's regulatory speed limit for each section of road, correct as of May 2020. This data set does not have any legal status, and it may not correspond with the actual speed limit posted as speed limit may have changed since the date of publication. The dataset is reviewed annually at a minimum.

This dataset represents the speed limits on the road going into and out of each town and village in County Westmeath.

This dataset comprises road centerlines for all roads in San Diego County. Road centerline information is collected from recorded documents (subdivision and parcel maps) and information provided by local jurisidictions (Cities in San Diego County, County of San Diego). Road names and address ranges are as designated by the official address coordinator for each jurisidcition. Jurisdictional information is created from spatial overlays with other data layers (e.g. Jurisdiction, Census Tract).The layer contains both public and private roads. Not all roads are shown on official, recorded documents. Centerlines may be included for dedicated public roads even if they have not been constructed. Public road names are the official names as maintained by the addressing authority for the jurisdiction in which the road is located. Official road names may not match the common or local name used to identify the road (e.g. State Route 94 is the official name of certain road segments commonly referred to as Campo Road).Private roads are either named or unnamed. Named private roads are as shown on official recorded documents or as directed by the addressing authority for the jurisdiction in which the road is located. Unnamed private roads are included where requested by the local jurisidiction or by SanGIS JPA members (primarily emergency response dispatch agencies). Roads are comprised of road segments that are individually identified by a unique, and persistent, ID (ROADSEGID). Roads segments are terminated where they intersect with each other, at jurisdictional boundaries (i.e. city limits), certain census tract and law beat boundaries, at locations where road names change, and at other locations as required by SanGIS JPA members. Each road segment terminates at an intersection point that can be found in the ROADS_INTERSECTION layer.Road centerlines do not necessarily follow the centerline of dedicated rights-of-way (ROW). Centerlines are adjusted as needed to fit the actual, constructed roadway. However, many road centerline segments are created intially based on record documents prior to construction and may not have been updated to meet as-built locations. Please notify SanGIS if the actual location differs from that shown. See the SanGIS website for contact information and reporting problems (http://www.sangis.org/contact/problem.html).Note, the road speeds in this layer are based on road segment class and were published as part of an agreement between San Diego Fire-Rescue, the San Diego County Sheriff's Department, and SanGIS. The average speed is based on heavy fire vehicles and may not represent the posted speed limit.

Author's Note:

This dataset was originally coined: "Speed Limits in New York City". Since then, I have changed the name of the dataset to "Describing New York City Roads" to better reflect the contents of the dataset.

• Curtis

Context

New York City Speed Limits

The New York Department of Transportation Regulates the speed limits for its roads (Afterall, we can't be hitting 88 MPH on a regular day). This dataset describes the speed limits for particular road segments of New York City streets.

The New York City Centerline

Which streets are inherently faster? How will speed limits come into play? How will nearby bike lanes slow down vehicles (and ultimately taxis)? These are the kinds of questions that can only be answered with contextual data of the streets themselves.

Fortunately, most major cities provide a public Centerline file that describes the path of all railroads, ferry routes, and streets in the city. I've taken the New York City Centerline and packaged a dataset that tries to extract meaning out of all the road connections within the city.

Content

New York City Speed Limits

Every speed limit region is a straight line. (Which represents a segment of road). These lines are expressed by two pairs of coordinates.

lat1 - The first latitude coord

lon1 - The first longitude coord

lat2 - The second latitude coord

lat2 - The second longitude coord

street - The name of the street the speed limit is imposed on

speed - The speed limit of that road section

signed - Denotes if there is a physical sign on the street that displays the speed limit to cars.

region - The city region that the road resides in. There are 5 regions: (Bronx, Brooklyn, Manhattan, Queens, and Staten Island)

distance - The length of the speed limit road section (in Miles).

The New York City Centerline

street - The name of the street

post_type* - The extension for the street name.

st_width - The width of the street (in feet). There are varying widths for the size of a street so it was hard to derive a lane count/ street using this feature. As a rule of thumb, the average lane is around 12 feet wide.

bike_lane - Defines which segments are part of the bicycle network as defined by the NYC Department of Transportation. There are 11 classes:

• 1 = Class I

• 2 = Class II

• 3 = Class III

• 4 = Links

• 5 = Class I, II

• 6 = Class II, III

• 7 = Stairs

• 8 = Class I, III

• 9 = Class II, I

• 10 = Class III, I

• 11 = Class III, II

Bike class information: https://en.wikipedia.org/wiki/Cycling_in_New_York_City#Bikeway_types

bike_traf_dir** - Describes the direction of traffic: (FT = With, TF = Against, TW = Two-Way)

traf_dir** - Describes the direction of traffic: (FT = With, TF = Against, TW = Two-Way)

rw_type - The type of road. There are 6 types of roads: (1 = Street, 2 = Highway, 3 = Bridge, 4 = Tunnel, 9 = Ramp, 13 = U-Turn). Note: I parsed awkward path types such as "Ferry route" and "trail".

start_contour*** - Numeric value indicating the vertical position of the feature's "from" node relative to grade level.

end_contour*** - Numeric value indicating the vertical position of the feature's "to" node relative to grade level.

snow_pri - The Department of Sanitation (DSNY) snow removal priority designation.

• V = Non-DSNY

• C = Critical (These streets have top priority)

• S = Sector (These streets are second priority)

• H = Haulster (Small spreaders with plows attached for treating areas with limited accessibility - can hold two tons of salt)

region - The city region that the road resides in. There are 5 regions: (Bronx, Brooklyn, Manhattan, Queens, and Staten Island)

length - The length of the road (in Miles).

points - The coordinates that define the road. Each coordinate is separated by '|' and the lat and lon values per coordinate are separated by ';'. (Side note: Round road sections are plotted by points along the curve).

*For those who may not be aware, road names are based on a convention. "Avenue"s, "Boulevard"s, and "Road"s are different for distinct reasons. I left these fields in the dataset in case you wish to find any patterns that are pertinent to those types of roads. To learn more about road conventions, visit this link: http://calgaryherald.com/news/local-news/in-naming-streets-strict-rules-dictate-roads-rises-trails-and-more

**To explain how direction works I'll provide you with an image: http://imgur.com/a/UflwX. Think of every road on the centerline as a vector. It points from one location to another. It always points from the very first coordinate to the very last coordinate. Now pay attention to the direction of the road (circled). Note how it points in the same direction as the vector denoted by the centerline data. The "...

Thanks to OS MasterMap Highways Network with Speed Data, you can also access road speed information through our product. It’s an additional dataset to help you plan logistics and monitor our roads more effectively.

Perhaps you're looking for more data about Great Britain's roads? Or maybe you're studying drive times or comparing vehicle types along routes or the impact of a new development? This could be the product for you.

We have enhanced our Highways Network family of products with these three speed data additions. Each product is supplied with an additional data file which will be either Average Speed, Speed Limits or a combination of both.

The data set records the speed limit according to the Inspiretema Transport Network (TN) SpeedLimit. The data set shows the speed limit based on traffic rule on the maximum speed at which vehicles may be driven as decided. SpeedLimit is generated from the following road data products: Speed limit The dataset is accessible via WMS, WFS and download of pre-generated files.

Max Speed limit values in miles per hour. This data is an extract from the Geospatial Roadway Inventory Databse (GRID), which is TxDOT's system for managing roadway assets in Texas.Note: Extracts from GRID are made on a regular basis and reflect the state of the data at that moment. Assets on routes that are in the process of being edited may be affected.Update Frequency: 1 MonthsSource: Geospatial Roadway Inventory Database (GRID)Security Level: PublicOwned by TxDOT: TrueRelated LinksData Dictionary PDF [Generated 2025/04/24]

The road characteristics database (WKD) for speeds contains speed limits for all roads in the NWB. At the beginning of 2017, WKD was filled for the entire Netherlands with data supplied by municipalities. From that moment on, the new traffic decisions have been used via the Knowledge and Operation Center for Official Government Publications (KOOP) to detect and process changes in speed limits. The NWB changes faster than the speed limits are supplied by the road authorities or placed in COOP. Algorithms are used to supplement the speed where necessary on short intermediate road sections. As a result, the speed limit is unknown for a few percent. Since 2022, the features Trees, Entrances, Bowl Boundaries, Parking Points, Parking Spaces, Traffic Center, Traffic Types, Road Width, Road Categorization and Road Narrowings have been added to the database as a CSV file. NB: In residential areas where a maximum speed of 30 km per hour applies, or in a residential area, this leads to major deviations from reality. The number of rural roads with a 60 km limit has also increased significantly since 2017. The possible speeds that can be entered are 5, 15, 20, 30, 40, 50, 60, 70, 80, 90, 100, 120, 130 km per hour and unknown. The speeds only apply to roads that are open to car traffic. On cycle paths, footpaths and other roads that are not open to car traffic, the speed is entered as unknown. This also applies to the ferry connections. The file provides variable maximum speeds with a start time and an end time. These apply in particular to motorways. Outside this period with the indicated start time and end time, an alternative speed applies. So, for example, between 6:00 AM and 7:00 PM the speed limit is 100 km per hour and outside of that time the maximum speed is 120 km per hour. The road characteristics database for speeds also contains the recommended speed limits that apply to a specific road section or part thereof.

This feature class contains unofficial speed limit data for all of the roadway segments within the City of London. Speed Limit data is provided for information purposes only. The final source of truth is the Traffic and Parking By-law and not this dataset. If the road segment doesn't have a speed limit, it is 50km/h.

Speed zones are set to enable drivers travelling at a speed limit to safely respond to potential risks in the road environment. This dataset contains data for NSW speed zones that are categorised as: Ordinary Permanent Shared High Pedestrian School Variable Local Traffic Truck & bus Wet Weather School Bus Toll Plaza Default

Speed limit information for most of Queensland's roads. Includes state and locally controlled roads. Point-in-time data as per date of collection in dataset.

SpeedMap is a project with the aim of producing a national speed limit database for the UK and Republic of Ireland which can be used with any digital map. Ten years ago we recognised the need for an accurate map to support innovation in road safety – without being tied to a costly proprietary mapping solution. Our data is sourced from a multitude of datasets and boasts 100% coverage of the UK and RoI road network with industry-leading accuracy >99%. Since supplying the first version to a telematics startup in 2012, SpeedMap has become the number one choice for companies who need speed limit data. Our dataset is used by global mapping providers, delivery companies, utility providers, insurance companies, as well as those providing in-vehicle systems. We make our data accessible, reliable and exploitable for your commercial needs, as well as putting the data in the hands of those responsible for making our roads safer.

Statewide Road Network including sealed and unsealed roads. The dataset represents navigable roads, including public and private access roads and tracks. A separate data layer stores 'unformed' DCDB centrelines which do not represent navigable roads. A limited number of associated features are stored separately as point features. Automatically updated when changes occur.

This dataset contains the current estimated speed for about 1250 segments covering 300 miles of arterial roads. For a more detailed description, go to: http://bit.ly/Q9AZAD.

The Chicago Traffic Tracker estimates traffic congestion on Chicago’s arterial streets (nonfreeway streets) in real-time by continuously monitoring and analyzing GPS traces received from Chicago Transit Authority (CTA) buses. Two types of congestion estimates are produced every ten minutes: 1) by Traffic Segments and 2) by Traffic Regions or Zones. Congestion estimate by traffic segments gives the observed speed typically for one-half mile of a street in one direction of traffic.

Traffic Segment level congestion is available for about 300 miles of principal arterials. Congestion by Traffic Region gives the average traffic condition for all arterial street segments within a region. A traffic region is comprised of two or three community areas with comparable traffic patterns. 29 regions are created to cover the entire city (except O’Hare airport area). This dataset contains the current estimated speed for about 1250 segments covering 300 miles of arterial roads. There is much volatility in traffic segment speed. However, the congestion estimates for the traffic regions remain consistent for relatively longer period. Most volatility in arterial speed comes from the very nature of the arterials themselves. Due to a myriad of factors, including but not limited to frequent intersections, traffic signals, transit movements, availability of alternative routes, crashes, short length of the segments, etc. speed on individual arterial segments can fluctuate from heavily congested to no congestion and back in a few minutes. The segment speed and traffic region congestion estimates together may give a better understanding of the actual traffic conditions.

This data asset has information for fixed and variable speed limits on all roads within the Yarra municipality. The speed limit details include road name (or segments for a specific road name), speed limit, limit type and road classification.

While all due care has been taken to ensure the data asset is accurate and current, Yarra City Council does not warrant that this data is definitive nor free of error and does not accept responsibility for any loss, damage, claim, expense, cost or liability whatsoever arising from reliance upon information provided herein.

Feedback on the data asset - including compliments, complaints and requests for more detail - is welcome.