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Camera Traffic Counts
Traffic count data collected from the several GRIDSMART optical traffic detectors deployed by the City of Austin.
The Travel Detectors dataset ( https://data.austintexas.gov/Transportation-and-Mobility/Traffic-Detectors/qpuw-8eeb ) is related to this dataset using the 'ATD Device ID' field. The Travel Detectors dataset provides more information on device location and status.
THIS DATASET IS UNDER ACTIVE DEVELOPMENT AND IS SUBJECT TO CHANGE AT ANYTIME. IT MAY CONTAIN INCOMPLETE OR INACCURATE INFORMATION
The average speed measurements may not have been calibrated for all intersections. All measurements have been collected using automated machine vision processes and have not been validated.
Columns
| Name | Socrata field name | Column name in sgr mount | Data type | Description |
|---|---|---|---|---|
| Record ID | record_id | record_id | Text | A unique ID for each row created as a hash of intersection name, time, truck status, direction, and movement |
| Seconds in Zone Average | seconds_in_zone_average | seconds_in_zone_average | Number | Average amount of time that vehicles were in the measurement zone, including time that vehicles are stopped at a red light |
| Month | month | month | Number | The numeric month of the aggregation interval |
| Hour | hour | hour | Number | The numeric hour of the aggregation interval |
| ATD Device ID | atd_device_id | atd_device_id | Number | The ID of the device as noted in the "Traffic Detectors" table |
| Heavy Vehicle | heavy_vehicle | heavy_vehicle | Checkbox | A classifier for vehicles that are measured to be 17 feet or longer |
| Direction | direction | direction | Text | The travel direction of the approach toward the intersection |
| Minute | minute | minute | Number | The numeric minute of the aggregation interval starting time |
| Day of Week | day_of_week | day_of_week | Number | Starting with Sunday is 0 and Monday is 1, and so on |
| Year | year | year | Number | The numeric year of the aggregation interval |
| Bin Duration (Seconds) | bin_duration | bin_duration | Number | Number of seconds for the aggregation interval: always 15 minutes |
| Intersection Name | intersection_name | intersection_name | Text | The general location of the counts. For further location information consult the 'Travel Detectors' dataset. |
| Day | day | day | Number | The numeric day of the aggregation interval |
| Seconds in Zone StdDev | seconds_in_zone_stddev | seconds_in_zone_stddev | Number | Standard deviation of "Seconds in Zone" |
| Movement | movement | movement | Text | The turning movement of respective traffic entering the intersection |
| Speed StdDev | speed_stddev | speed_stddev | Number | Standard deviation of all speed measurements, or 0 if Volume is less than 2. |
| Read Date | read_date | read_date | Calendar date | The start of the respective time interval used for aggregation, UTC |
| Volume | volume | volume | Number | The number of vehicles traveling in the respective direction and making the respective turning movement throughout the 15-minute interval |
| Speed Average (Miles Per Hour) | speed_average | speed_average | Number | Average speed of vehicles that entered the intersection, including those that had started after the end of a red light |
Upstream Metadata