Annual average daily traffic is the total volume for the year divided by 365 days. The traffic count year is from October 1st through September 30th. Very few locations in California are actually counted continuously. Traffic Counting is generally performed by electronic counting instruments moved from location throughout the State in a program of continuous traffic count sampling. The resulting counts are adjusted to an estimate of annual average daily traffic by compensating for seasonal influence, weekly variation and other variables which may be present. Annual ADT is necessary for presenting a statewide picture of traffic flow, evaluating traffic trends, computing accident rates. planning and designing highways and other purposes.Traffic Census Program Page

Annual average daily traffic is the total volume for the year divided by 365 days. The truck count year is from October 1st through September 30th. Very few locations in California are actually counted continuously. Truck Counting is generally performed by electronic counting instruments moved from location throughout the State in a program of continuous traffic count sampling. The resulting counts are adjusted to an estimate of annual average daily traffic by compensating for seasonal influence, weekly variation and other variables which may be present. Annual ADT is necessary for presenting a statewide picture of traffic flow, evaluating traffic trends, computing accident rates. planning and designing highways and other purposes.

Annual average daily truck traffic is the total truck traffic volume divided by 365 days. Truck counting is done throughout the state in a program of continuous truck count sampling. The sampling includes a partial day, 24-hour, 7-day and continuous vehicle classification counts. The partial day and 24-hour counts are usually made on high volume, urban highways. The 7-day counts are made on low volume, rural highways. The counts are usually taken only once in the year. About one-sixth of the locations are counted annually. The resulting counts are adjusted to an estimate of annual average daily truck traffic by compensating for seasonal influence, weekly variation, and other variables that may be present. Annual average daily truck traffic is necessary for presenting a statewide picture of truck flow, evaluating truck trends, planning and designing highways and for other purposes. Truck traffic is classified by number of axles. The two-axle class includes 11/2-ton trucks with dual rear tires and excludes pickups and vans with only four tires. Total vehicle AADT for the same year is taken from the Traffic Volumes on California State Highways booklet also published by the California Department of Transportation.Reference Link: https://www.dot.ca.gov/hq/traffops/saferesr/trafdata/index.htm

This traffic volumes feature class containing Traffic Volumes (also known as Traffic Counts) on California state highway network created from AADT excel spreadsheet file maintained by Caltrans, Division of Traffic Operations.Annual average daily traffic is the total volume for the year divided by 365 days. The traffic count year is from October 1st through September 30th. Very few locations in California are actually counted continuously. Traffic Counting is generally performed by electronic counting instruments moved from _location throughout the State in a program of continuous traffic count sampling. The resulting counts are adjusted to an estimate of annual average daily traffic by compensating for seasonal influence, weekly variation and other variables which may be present. Annual ADT is necessary for presenting a statewide picture of traffic flow, evaluating traffic trends, computing accident rates, planning and designing highways and other purposes.

This is a point GIS dataset representing Traffic Volumes (Annual Average Daily Traffic (AADT)) on the California Department of Transportation (Caltrans) state highway network.

Analysis of ‘Annual Average Daily Traffic (AADT) Volumes’ provided by Analyst-2 (analyst-2.ai), based on source dataset retrieved from https://catalog.data.gov/dataset/352f50a3-9644-4887-b7a9-c7cf0d86b614 on 26 January 2022.

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

Traffic Volumes (a.k.a.Traffic Counts) are surveyed from the California State Highway System. The data originated from Caltrans Traffic Census database compiled by Caltrans Districts Offices. The Districts calculated the volumes hourly, daily, and monthly to derive an annual average daily traffic count. Volumes are surveyed in both directions, "Back" describes south or west of the location at which the count was recorded and "Ahead" describes north or east of the location at which the count was recorded. More info: https://dot.ca.gov/programs/traffic-operations/census

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

This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data.

This dataset provides annual traffic counts from Caltrans, updated in real time via the California Open Data API.

This dataset is intended for researchers, students, and policy makers for reference and mapping purposes, and may be used for basic applications such as viewing, querying, and map output production, or to provide a basemap to support graphical overlays and analysis with other spatial data.

Major Highways: Major highways used to analyze transportation needs and alternatives for the Lake Tahoe RegionCounty Roads: County roads used to analyze transportation needs and alternatives for the Lake Tahoe RegionStreets: Geocoded streets (The best available streets layer for the Lake Tahoe region)Existing Bike Trails: Bikeway class designation. Proposed Bike Trails: 2017 Proposed active transportation network with class, name, segment length, and constrained/unconstrained plan typeBike Trails 75ft buffer: 2017 - 75 foot buffer around existing active transportation network segmentsTraffic Analysis Zones (TAZ): The purpose for these boundaries is to provide zones to analyze transportation needs and alternatives for the Lake Tahoe Region to meet the Tahoe Regional Planning Agency thresholds, as well as conform to local, state, and federal regulations. Bike and Ped Counter: Bicycle and pedestrian counts obtained from TRPA's Trafx/EcoVision automated counters as of November 2017Vehicle Collisions and Injuries on Highways: Vehicle collisions and injuries on highways reported by NDOT and CalTrans. Retrieved October 2017. Traffic volumes reported by CalTrans and NDOT: Traffic volumes reported by CalTrans and NDOT. Measured by average annual daily traffic (AADT). Data retrieved October 2017. Limebike trip: Limebike trips and users from the Summer/Fall 2017 South Shore Limebike pilot project2020 Regional Transportation Plan Projects: https://tahoempo.org/ActiveTransportationPlan/docs/appendices/Appendix%20H_Project%20Lists.pdf

Major Highways: Major highways used to analyze transportation needs and alternatives for the Lake Tahoe Region
County Roads: County roads used to analyze transportation needs and alternatives for the Lake Tahoe Region
Streets: Geocoded streets (The best available streets layer for the Lake Tahoe region)
Existing Bike Trails: Bikeway class designation.
Proposed Bike Trails: 2017 Proposed active transportation network with class, name, segment length, and constrained/unconstrained plan type
Bike Trails 75ft buffer: 2017 - 75 foot buffer around existing active transportation network segments
Traffic Analysis Zones (TAZ): The purpose for these boundaries is to provide zones to analyze transportation needs and alternatives for the Lake Tahoe Region to meet the Tahoe Regional Planning Agency thresholds, as well as conform to local, state, and federal regulations.
Bike and Ped Counter: Bicycle and pedestrian counts obtained from TRPA's Trafx/EcoVision automated counters as of November 2017
Vehicle Collisions and Injuries on Highways: Vehicle collisions and injuries on highways reported by NDOT and CalTrans. Retrieved October 2017.
Traffic volumes reported by CalTrans and NDOT: Traffic volumes reported by CalTrans and NDOT. Measured by average annual daily traffic (AADT). Data retrieved October 2017.

This data set is used for storage of Average Daily Traffic (ADT) data in Buena Park. This data set is typically updated every 7 to 10 years with the most recent traffic count data. Street segments represent the segments as they are collected in the field.ADT is typically defined as The total traffic volume during a given time period, ranging from 2 to 364 consecutive days, divided by the number of days in that time period, and expressed in vpd (vehicles per day). For example, if a particular street segment has a reported ADT of 10,000, this would mean that an average day would expect to see 10,000 vehicles travel that section of the roadway in both directions.Buena Park typically collects ADT data on these roadways when reviewing the city wide speed limits. Certain street segments may have their ADT data updated more regularly if needed. Staff also collects ADT data on other streets in the city (not shown here) on an as needed basis. Contact the Buena Park Traffic Division for more information on these counts.Please note that the 5 freeway, 91 freeway, and portions of Beach Boulevard are operated by the California Department of Transportation (Caltrans). Caltrans ADT data can be obtained online at their Traffic Census Program website.

Major Highways - Used to analyze transportation needs and alternatives for the Lake Tahoe Region.County Roads - Used to analyze transportation needs and alternatives for the Lake Tahoe Region.Streets - Geocoded streets (The best available streets layer for the Lake Tahoe region).Existing Active Transportation Facilities - Bikeway class designation.Existing Active Transportation Facilities - 75ft buffer - A 75 foot buffer around existing active transportation network segments. Proposed Active Transportation Facilities - Proposed Bikeway class designation.Proposed Active Transportation Facilities - 75ft buffer - A 75 foot buffer around proposed active transportation network segments. Tahoe Transit Routes (Consolidated) - Transit routes throughout the Lake Tahoe Region.Microtransit Service Areas - Area of service covered by Lake Link and TART Connect.2020 Regional Transportation Plan Projects - Plan Projects (link to plan)Traffic Analysis Zones (TAZ) - The purpose for these boundaries is to provide zones to analyze transportation needs and alternatives for the Lake Tahoe Region to meet the Tahoe Regional Planning Agency thresholds, as well as conform to local, state, and federal regulations.Tahoe Bus Stops - Transit stops throughout the Lake Tahoe Region.Traffic Volumes – Crashes as reported by CalTrans and NDOT. Measured by average annual daily traffic (AADT).Tahoe Crashes - Collision data reported by CalTrans and NDOT.

Spatial Reference: NAD83 / UTM zone 10N (26910) Area Covered: Tahoe Basin, Nevada, California

Major Highways: Major highways used to analyze transportation needs and alternatives for the Lake Tahoe Region
County Roads: County roads used to analyze transportation needs and alternatives for the Lake Tahoe Region
Streets: Geocoded streets (The best available streets layer for the Lake Tahoe region)
Existing Bike Trails: Bikeway class designation.
Proposed Bike Trails: 2017 Proposed active transportation network with class, name, segment length, and constrained/unconstrained plan type
Bike Trails 75ft buffer: 2017 - 75 foot buffer around existing active transportation network segments
Traffic Analysis Zones (TAZ): The purpose for these boundaries is to provide zones to analyze transportation needs and alternatives for the Lake Tahoe Region to meet the Tahoe Regional Planning Agency thresholds, as well as conform to local, state, and federal regulations.
Bike and Ped Counter: Bicycle and pedestrian counts obtained from TRPA's Trafx/EcoVision automated counters as of November 2017
Vehicle Collisions and Injuries on Highways: Vehicle collisions and injuries on highways reported by NDOT and CalTrans. Retrieved October 2017.
Traffic volumes reported by CalTrans and NDOT: Traffic volumes reported by CalTrans and NDOT. Measured by average annual daily traffic (AADT). Data retrieved October 2017.

Major Highways - Used to analyze transportation needs and alternatives for the Lake Tahoe Region.County Roads - Used to analyze transportation needs and alternatives for the Lake Tahoe Region.Streets - Geocoded streets (The best available streets layer for the Lake Tahoe region).Existing Active Transportation Facilities - Bikeway class designation.Existing Active Transportation Facilities - 75ft buffer - A 75 foot buffer around existing active transportation network segments. Proposed Active Transportation Facilities - Proposed Bikeway class designation.Proposed Active Transportation Facilities - 75ft buffer - A 75 foot buffer around proposed active transportation network segments. Tahoe Transit Routes (Consolidated) - Transit routes throughout the Lake Tahoe Region.Microtransit Service Areas - Area of service covered by Lake Link and TART Connect.2020 Regional Transportation Plan Projects - Plan Projects (link to plan)Traffic Analysis Zones (TAZ) - The purpose for these boundaries is to provide zones to analyze transportation needs and alternatives for the Lake Tahoe Region to meet the Tahoe Regional Planning Agency thresholds, as well as conform to local, state, and federal regulations.Tahoe Bus Stops - Transit stops throughout the Lake Tahoe Region.Traffic Volumes – Crashes as reported by CalTrans and NDOT. Measured by average annual daily traffic (AADT).Tahoe Crashes - Collision data reported by CalTrans and NDOT.

Spatial Reference: NAD83 / UTM zone 10N (26910) Area Covered: Tahoe Basin, Nevada, California

Major Highways: Major highways used to analyze transportation needs and alternatives for the Lake Tahoe Region
County Roads: County roads used to analyze transportation needs and alternatives for the Lake Tahoe Region
Streets: Geocoded streets (The best available streets layer for the Lake Tahoe region)
Existing Bike Trails: Bikeway class designation.
Proposed Bike Trails: 2017 Proposed active transportation network with class, name, segment length, and constrained/unconstrained plan type
Bike Trails 75ft buffer: 2017 - 75 foot buffer around existing active transportation network segments
Traffic Analysis Zones (TAZ): The purpose for these boundaries is to provide zones to analyze transportation needs and alternatives for the Lake Tahoe Region to meet the Tahoe Regional Planning Agency thresholds, as well as conform to local, state, and federal regulations.
Bike and Ped Counter: Bicycle and pedestrian counts obtained from TRPA's Trafx/EcoVision automated counters as of November 2017
Vehicle Collisions and Injuries on Highways: Vehicle collisions and injuries on highways reported by NDOT and CalTrans. Retrieved October 2017.
Traffic volumes reported by CalTrans and NDOT: Traffic volumes reported by CalTrans and NDOT. Measured by average annual daily traffic (AADT). Data retrieved October 2017.

Major Highways: Major highways used to analyze transportation needs and alternatives for the Lake Tahoe RegionCounty Roads: County roads used to analyze transportation needs and alternatives for the Lake Tahoe RegionStreets: Geocoded streets (The best available streets layer for the Lake Tahoe region)Existing Bike Trails: Bikeway class designation. Proposed Bike Trails: 2017 Proposed active transportation network with class, name, segment length, and constrained/unconstrained plan typeBike Trails 75ft buffer: 2017 - 75 foot buffer around existing active transportation network segmentsTraffic Analysis Zones (TAZ): The purpose for these boundaries is to provide zones to analyze transportation needs and alternatives for the Lake Tahoe Region to meet the Tahoe Regional Planning Agency thresholds, as well as conform to local, state, and federal regulations. Bike and Ped Counter: Bicycle and pedestrian counts obtained from TRPA's Trafx/EcoVision automated counters as of November 2017Vehicle Collisions and Injuries on Highways: Vehicle collisions and injuries on highways reported by NDOT and CalTrans. Retrieved October 2017. Traffic volumes reported by CalTrans and NDOT: Traffic volumes reported by CalTrans and NDOT. Measured by average annual daily traffic (AADT). Data retrieved October 2017. 2020 Regional Transportation Plan Projects: https://tahoempo.org/ActiveTransportationPlan/docs/appendices/Appendix%20H_Project%20Lists.pdf