Some roads use portable barriers or plastic poles that are manually rearranged by work crews before and after the peak period, others use both lights and on-street markings (broken double-yellow line) or overhead lights.
Some roads use portable barriers or plastic poles that are manually rearranged by work crews before and after the peak period. Connecticut Avenue uses both lights and on-street markings (broken double-yellow line) while most others rely only on overhead lights.