Each year NHDOT specifies locations around the region according to a 3-year rotating cycle. This data is then added to a statewide database that tracks information such as traffic patterns, traffic volumes, and types of vehicles. 

Traffic counts are performed by laying rubber tubing across the road, which is connected to a data collector in order to quantify and classify the vehicles traveling over it. 

The information collected is available for annual traffic monitoring and can be used to aid local, state, or private projects. To view, the data visit the Transportation Data Management System website to view this information.