The emergency routes through southern NH are a joke with the volume of traffic that is in the area. The problem is the mix of heavy commercial truck traffic and commuters in cars. Trucks can't clear an intersection very fast which slows the whole process down, and most of the surface streets are not designed for large trucks. I watched a driver in a sleeper with a 53 foot trailer make a left turn from Hazen Drive to East Side Drive during the detour and it was tight and slow. I think they did a good job with what they had to work with, but there should be specific truck and car routes.
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