- At a glance
- Group
- Supplementary signs · 24 of 27
- Shape
- Rectangle or square
- Colours
- Varies by sign: white, yellow or blue background
- Legal basis
- § 77 of the regulation on road signs and signals
- Exam questions
- None in the question catalogue
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F-21 Traffic diverted onto the adjacent carriageway
What it means
Warns that traffic has been diverted onto the adjacent carriageway of a dual carriageway road, e.g. during roadworks. Beyond the sign you may meet oncoming vehicles on the same carriageway.