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Overhead lane direction control

Traffic signal

Overhead lane direction control

S18

Illustrative image — The manual draws this code sharing one image with sibling code(s) S16, S17, S19 — shown as printed, not isolated to S18 alone.

Where
Above the lane it controls, on any road.
Action
Yellow arrow left. Indicates to the driver that the lane he/she is driving in is closed ahead. The driver must leave the lane in the direction of the arrow.

Manual on Road Traffic Signs, page 57.