Begin Right Turn Lane / Yield to Bikes Sign
MUTCD R4-4
Motorists turning right must yield to bicyclists in the bike lane.
What it looks like
A vertical white rectangle with black legend marking the start of a right-turn lane and directing drivers to yield to bicycles.
When you'll see it
Posted where a right-turn lane begins next to a bike lane, so turning cars cross the path of cyclists going straight.
What to do
Before moving into the right-turn lane you must yield to any bicyclist in the bike lane, merging only after the path is clear.
Related signs
Source: Manual on Uniform Traffic Control Devices (MUTCD), 11th Edition — FHWA.