Traffic Count Data
24-hour weekday average counts updated through 2011 are now available via our Google Maps application.
To access the map, please click HERE.
About our traffic counts
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.
maintains historical records for many of these locations so that
growth trends can be examined. This data is now available online,
covering every count from 1991 to the present. 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
*Not all count locations will be visible upon loading. Zoom in to see more points.
*A complete list of counts in the database can be found on the left, organized alphabetically by community.
*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.
*Most counts were conducted by NRPC - a small percentage come from member communities, neighboring planning commissions, and the NHDOT.