Traffic Counts

As part of the Unified Planning Work Program (UPWP), SNHPC conducts traffic counts on regional roadways on an annual basis. For the 2023 traffic counting season, (April through November), NHDOT traffic counts will be conducted at 201 locations, and 164 locations for the SNHPC model. A table showing the number of traffic counts by community can be found below.

If a member community would like to request a traffic count, please click the Traffic Study Request Form button. For additional information regarding SNHPC’s traffic counting program please click on Frequently Asked Questions (F.A.Q).

Traffic count data for the SNHPC region can be viewed by clicking the Traffic Count Web Map button or by clicking on the image above. For a historical traffic count database, please check out our traffic volume summaries by clicking the Traffic Count PDF Summaries (to 2019). Currently our traffic count data is only displayed on our website until 2019. This is due to the disruption that COVID-19 and its variants had on traffic patterns in 2020, 2021 and 2022 which affected NHDOT’s ability to generate and adopt seasonal factors that are used when calculating the Annual Average Daily Traffic data or AADT. Once new seasonal factors are adopted by the NHDOT, SNHPC will update the SNHPC Traffic Count web map and pdf summaries to display the most recent traffic data.

To access the NHDOT’s Transportation Data Management System (TDMS) which showcases traffic data collected all over the Granite State please click on the image above or use the following link:

https://nhdot.public.ms2soft.com/tcds/tsearch.asp?loc=Nhdot&mod=TCDS

For more information on the Traffic Counting Program, please see this presentation from the April 20, 2023 TAC Meeting.