Auxiliary Service Roads
An auxiliary service road constructed by the state is another way to create a Class IV, V or VI highway. RSA 230:51. Auxiliary service roads provide access to, but are not part of, limited access highways.
Once the commissioner of transportation classifies an auxiliary service road as either a Class IV, V, or VI highway, the state no longer may restrict commercial uses or otherwise regulate the use of the road. “[T]hereafter the towns or cities shall maintain any road classified as class IV or V and the highway user shall maintain any road classified as class VI.”