Most vehicle crash cushions in use today are cumbersome to maneuver and are expensive. To reduce these ... Twin lights outperformed single beacons, and light bars fared better than single lights. ... Further studies of car- following at night led Janssen (21 ) to conclude that, while angular velocity is a primary cue, perception is not always correct. Table L Summary of state manual review. Does theanbsp;...
|Title||:||Service Vehicle Lighting and Traffic Control Systems for Short-term and Moving Operations|
|Author||:||Fred R. Hanscom, Richard F. Pain|
|Publisher||:||Transportation Research Board - 1990|