Traffic Signs
Signs giving orders
Signs with red circles are mostly prohibitive.
Plates below signs qualify their message.

Entry to 20 mph zone
                
End of 20 mph zone
                
Maximum speed
                
National speed limit applies
                
School crossing patrol
                
Stop and give way
                
Give way to traffic on major road
                
Manually operated temporary STOP and GO signs
                
No entry for vehicular traffic
                
No vehicles except bicycles being pushed
                
No cycling
                
No motor vehicles
                
No buses (over 8 passenger seats)
                
No overtaking
                
No towed caravans
                
No vehicles carrying explosives
                
No vehicle or combination of vehicles over length shown
                
No vehicles over height shown
                
No vehicles over width shown
                
Give priority to vehicles from opposite direction
                
No left turn
                
No right turn
                
No U-turns
                
No goods vehicles over maximum gross weight shown (in tonnes) except for loading and unloading
                
No vehicles over maximum gross weight shown (in tonnes)
                
Parking restricted to permit holders
                
No stopping during period indicated except for buses
                
No stopping during times shown except for as long as necessary to set down or pick up passengers
                
No waiting
                
No stopping (Clearway)
                Signs with blue circles but no red border mostly give positive instruction.

Ahead only
                
Turn left ahead (right if symbol reversed)
                
Turn left (right if symbol reversed)
                
Keep left (right if symbol reversed)
                
Vehicles may pass either side to reach same destination
                
Mini-roundabout (roundabout circulation - give way to vehicles from the immediate right)
                
Route to be used by pedal cycles only
                
Segregated pedal cycle and pedestrian route
                
Minimum speed
                
End of minimum speed
                
Buses and cycles only
                
Trams only
                
Pedestrian crossing point over tramway
                
One-way traffic (note: compare circular ‘Ahead only’ sign)
                
With-flow bus and cycle lane
                
Contra-flow bus lane
                
With-flow pedal cycle lane