Traffic data collection
To collect accurate and continuous traffic data, TxDOT maintains a network of over 350 permanent count sites along various roadway segments throughout the state. The data collected are used to measure the distribution and variation of traffic patterns at a particular roadway segment.
This data then provides a general description of the roadway segment characteristics, which can then be applied to any similar roadway segment throughout the state. The data collected at each of the permanent count sites provides FHWA and TxDOT with current and past performance, which helps establish future needs and improvements of the various roadway segments in Texas.
Standard sheets
Traffic data collection sheets are for use in major pavement construction projects in truck corridors and construction or maintenance projects impacting existing traffic data collection sites or for new site installations.
| Title | DGN | |
| Weigh-in-motion (WIM) | TDC-1-08302023 | TDC-1-08302023 |
| Vehicle classification (VC) | TDC-2-10072022 | TDC-2-10072022 |
| Traffic data collection (TDC) loop details | TDC-3-10072022 | TDC-3-10072022 |
| Title | Specification / Provision | Rich Text Format (RTF) | |
| Weigh-in-motion (WIM) | Special Specification | SS6488-002 | SS6488-002 |
| Weigh-in-motion (WIM) | Special Provision | SP6488-001 | SP6488-001 |
| Vehicle classification (VC) | Special Specification | SS6506-002 | SS6506-002 |
| Vehicle classification (VC) | Special Provision | SP6506-001 | SP6506-001 |
| Diamond Grinding and Grooving Pavement | Special Specification | SS3004 | SS3004 |
| Kistler 3-Year Certification | Special Provision | SP0001306 | SP0001306 |
Resources
Statewide Planning Map
The Statewide Planning Map displays data in support of planning operations at TxDOT. Information related to TxDOT’s Permanent Data Collection Sites can be found under ‘Permanent Count Stations.’ In addition, projects that might impact a Permanent Data Collection Site can be selected based on the following: Construction underway or begins soon, Construction begins within four years, and Construction begins in five to 10 years.
TxDOT Permanent Traffic Data Collection Site Workflow Diagram
The workflow diagram provides a quick process overview by highlighting the department resources needed to restore a permanent site to full operational status.
STARS II
The Statewide Traffic Analysis and Reporting System (STARS II) is a data analysis and reporting database with detailed traffic data and statistics.
Statewide Traffic Analysis and Reporting System (STARS II)
Traffic Monitoring Guide
The Traffic Monitoring Guide provides guidance, methodology, and approaches for state highway agencies to collect, analyze, report traffic data, and manage their traffic monitoring programs.
Website: Traffic Monitoring Guide (TMG) | FHWA
Contact Program Manager
Samuel.Norman@txdot.gov
512-851-9838