What is the minimum speed limit on the Massachusetts Turnpike?

Answer: C — 40 mph

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.