Submitter Response for 2023-D-20

Determine the Accuracy and Bias of Currently Available Portable Technologies for Obtaining Short Term Traffic Volumes for Segments and Intersections.

From: [email: kltaylor@ncdot.gov]

Comments:

Thank you for your supportive comments.  In regard to comments made in the D-21 review about combining it with D-20, we believe each problem statement has merit on its own and they should be considered separately.   Problem Statement D-21 deals with establishing a practical methodology and tools for obtaining ground truth (i.e., quantification of accuracy, precision, and bias) of raw traffic volume counts obtained either from portable or permanent automated traffic counters.  Its outcome will inform the update of ASTM E2532-09.  On the other hand, D-20 focuses on field testing of different equipment used for short-term counts and establishing the accuracy of various technologies currently available for obtaining short term counts.  As such, it utilizes ground truth accuracy counts (obtained either from permanently installed continuously counting equipment, video, or manual counts) as a reference for calculating accuracy and establishing bias of equipment used for short-term counts. 

We agree with the reviewers’ comment and recommendation about the budget and period of performance and recommend the following update: 

Funding Requested: $450,000. Research Period: 30 months.

Contact Info:

Kent L. Taylor, North Carolina Department of Transportation, (919) 345-9829 mobile, kltaylor@ncdot.gov

Review Date:

02/07/22