What is the minimum speed limit on the Massachusetts Turnpike?

The minimum speed limit on the Massachusetts Turnpike is indeed 40 mph. This regulation is designed to ensure that all vehicles are traveling at a speed that maintains the flow of traffic and minimizes the risk of accidents. A minimum speed limit helps driver safety by preventing significantly slower vehicles from impeding faster-moving traffic, which can create hazardous conditions. On highways like the Turnpike, where traffic speeds are generally higher, setting a minimum limit ensures that vehicles are traveling at a speed that is deemed safe for highway conditions.