Mandatory sign
Ahead only
A blue circle with an upward arrow means ahead only. You must continue straight on and may not turn left or right at this point.
When you see it
- ◆ Carry straight on -- turning is not permitted here.
- ◆ It is used to stop turns into restricted or one-way streets.
- ◆ Choose your lane early if other lanes allow turns.
- ◆ Blue circular signs give a positive instruction you must obey.