showing a person making a turn to the left but there is no road there. That is right, they are making a U-turn.
but this time a policeman is highly visible.
Reference Material: 1. Highway Capacity Manual, Special Report 209, Transportation Research Board, National Research Council 2. MUTCD, Manual On Uniform Traffic Control Devices, Federal Highway Administration
Copyright © 1997 William V. Thayer, All Rights Reserved