Why may a minimum speed limit be posted on part of a highway?
Correct answer: A – To prevent unusually slow driving from impeding normal traffic movement
Maryland may establish a minimum speed after an engineering and traffic investigation finds that slow speeds impede normal and reasonable traffic movement. Unless a lower speed is necessary for safety or required by law, drivers may not travel below a posted minimum. The restriction becomes effective when appropriate signs are posted.
Source: Md. Code, Transp. § 21-804(a), (b) — Minimum Speed Regulation



