Rt. 100 is a very active speed trap especially east bound. Howard County Police often use the site just under the Rt. 103 overpass to set up the trap and catch motorists as they come off of a hill. It will typically involve several cruisers/officers parked to the left of the fast lane under the overpass. One officer will use the radar, another will flag motorists to stop and a third will write the ticket. If you get a ticket however go to court as all three officers will need to be present to establish a case. My case was dismissed because only one of the officers showed up to court.