Bicycles Allowed Use of Full Lane sign

What to do

Expect bicyclists in the travel lane. Follow behind them and pass only when you can change lanes or pass safely.

Expect a bicyclist to ride near the center of the lane, stay behind at a safe distance, and pass only by fully changing lanes when it is safe.

In the 2009 MUTCD this sign was R4-11.

Where it's used

Section 9B.14 allows this sign where there are no bike lanes or usable shoulders and the travel lanes are too narrow for a bicycle and a motor vehicle to travel safely side by side, or wherever road users need to know bicyclists might occupy the lane. It is a white square regulatory sign with a black bicycle symbol and the words MAY USE FULL LANE. The shared-lane marking (sharrow) may be used with it or instead of it.

Don't confuse it with

• Shared-Lane Marking (sharrow): The sharrow is a pavement marking showing where bicyclists are likely to ride, while this is a post-mounted regulatory sign.
• Bike Lane: The Bike Lane sign marks a separate lane reserved for bicycles; this sign means bicyclists share your travel lane.
• Bicycle Warning: The yellow Bicycle Warning diamond warns of bicyclists entering or crossing, not riding in your lane along the road.