 The reduced speed limit is indicated by a set of flashing lights installed in December 2011.MDOT started construction of a new 20-space commuter parking lot at the southern terminus of M-553 at M-35 on August 11, 2008, as part of an effort to offer expanded ride-sharing opportunities in Marquette County.Another carpool lot was added at the Crossroads when MDOT partnered with the restaurant there.