Traffic Data Collection FAQs

  • ALPR stands for Automated License Plate Recognition.

  • The road tubes that are placed do not automatically provide speed information. A set of road tubes versus one road tube is required and the computer that records the data must be appropriately configured to collect speed data.

  • We are undertaking traffic counts at the request of local Government to survey existing traffic conditions. This survey information is collected on a regular basis for Government to understand how traffic is growing or reducing along roadways. This information is used to make long-range projections for road improvements, for resurfacing of roadways, reimbursed by the Federal Government from gas tax revenues.

  • In congested areas, traffic volumes can be classified unless vehicles are at a stop or a crawl and there is gridlock.

  • Verification of data is undertaken many times by checking nearby intersection counts or undertaking manual traffic counts in the same area or at the exact location where the data is being collected. Therefore, both manual and machine counts are often undertaken at the same time to verify the accuracy of the machine data.

  • Under normal circumstances, mechanical or turning movement counts can be completed within one to two weeks of the request to collect the data, depending on the time of year, it is possible that it could take three to four weeks for completion and summary of the information.

  • A systematic process for the collection, analysis, summary and retention of highway and transit related person and vehicular traffic data.

  • Average Annual Daily Traffic – the average amount of daily traffic at a particular location of a road.

  • Automatic Traffic Recorder – device used to collect traffic count data. These machines are mini-computers powered by batteries or solar energy. The box is connected to a set of road tubes.

  • A vehicle classification count is used to determine the percentage of vehicles within the 13–15 class system set forth by the FHWA (Federal Highway Administration), whereas a volume count only determines total number of vehicles without regard to the type of vehicle (car, truck, bus, etc.).

  • What Our Clients Say

    • Thanks for being so responsive and accommodating to our traffic needs. I really appreciate your quick turnaround on the last minute request from the city. Thanks for mobilizing on a few days’ notice and providing such excellent customer service.

      Kathryn Kleinschmidt, PE, PTOE, Garver
    • Wes Guckert and his extraordinary set of professionals at The Traffic Group not only conducted an incredibly thorough analysis of how best to design a unique, first-class, county-wide rapid transit system for Montgomery County, Maryland; but, even more important for purposes of our Task Force studies, presented a menu ...

      Montgomery County Transit Task Force
    • I just wanted to send you a Thank you note for all your hard work on the I-5 license plate study and for sending us all the reports, appendices and exhibits that we requested. We have been investigating the license plate data and survey data further, and are able ...

      Bharath Paladugu, Thurston Regional Planning Council
    • Our association with The Traffic Group last counting season was a very positive experience for NDDOT. Your company’s experience in all aspects of traffic counting was impressive. So impressive, in fact, that we are reluctant to let all that knowledge escape without a few more “follow-up” questions.

      Bob Shjeflo, North Dakota Department of Transportation
    • We feel the data provided to us is very reliable, and therefore an integral part of our planning purposes for highways and bridges in West Virginia. We know we can ‘count’ on you.

      Thomas L. Myers – Traffic Analysis Section Head Planning and Research Division, West Virginia Department of Transportation
    • As one of our Traffic Engineering Division’s contract partners, they (The Traffic Group, Inc.) collect between 4,500 and 5,000 traffic counts annually. TTG has successfully fulfilled its contractual obligations to VDOT in the sixteen separate contracts we have had with them over the past fourteen years.

      Tom Schinkel, Commonwealth of Virginia
    • We are happy with the job you did for us, especially with the promptness and readiness to work with us, discuss issues and find solutions. Will work with you again without any hesitation.

      Arben Shasho, PhD, Transurban (USA) Inc.
    • The Traffic Group has been called on many times for last minute revisions and every time they have been able to ramp up their team and get the work product changed. They operate with the utmost honesty & integrity and do whatever is needed to get a quality product.

      Chris Duffy, Petrie Ross Ventures

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