May 15:   In Maryland, speed cameras are restricted to work and school zones. Optotraffic works closely with police departments in selecting the school zones where there is a need to slow down speeders.  But some of the students aren’t exactly kids.  In fact tens of thousands of college students go to a half dozen campuses in just Prince George’s County.  Many of these campuses are in high traffic areas and we’re helping keep those “kids” safe.