Traffic Counts

Each year, NRPC conducts well over 100 traffic counts at locations throughout the region. This data is used both by NRPC and New Hampshire DOT to generate reports that assist in decision making by local and state officials. NRPC also uses count data to calibrate and validate its traffic modeling program. NRPC maintains historical records for many of these locations so that growth trends can be examined. Included are yearly counts requested by NHDOT, as well any count performed at the request of NRPC's member communities or for the purposes of NRPC transportation studies.


  • Data covers every count from 1991 to present.
  • Most volumes represent 24-hour raw data averages for the 5-weekday period (Mon-Fri). Some counts performed by NHDOT are factored to account for truck traffic and seasonal variation.
  • Hourly counts are available for most locations in the database. Please contact NRPC with the location ID for more information.