Advisory and Informatory Signs

A section of dual carriageway commences ahead

Distance to the start of a dual carriageway

Short distance dual carriageway for the distance shown

A run-off lane may be provided before the beginning of a steep hill so that vehicles that may be unable to stop after trying brakes can use it to safely stop


These signs indicate the loss of the outside lane on a motorway, dual carriageway road or one-way street. The signs may be reversed to indicate the loss of the left-hand lane. The number of ahead lanes is varied as appropriate. The signs are often used at the end of a climbing lane and may include a distance

No through road ahead

No through road on side road to the left

No through road on side road to the right

Width restriction on the route ahead. This sign also has advive for an alternative route that can be used by vehicles that exceed the restriction.

Environmental weight limit restriction on the route ahead. This sign also has advice for an alternative route that can be used by vehicles that exceed the restriction.


Arch bridge on the route ahead. This sign also has advice for an alternative route that can be used by vehicles that exceed the restriction.


Structural weight limit restriction on the route ahead.

Vehicle height limit restriction on the route ahead.


Vehicle length limit restriction on the route ahead.


Narrow road with passing places at intervals

Single track road without any passing places for the distance shown

Single track road with passing places that can be used by slower vehicles to allow overtaking.


UPPER: Route unsuitable for HGVs


LOWER: Route unsuitable for caravans being towed

UPPER: Route unsuitable for towed trailers


LOWER: Route unsuitable for all motor vehicles

UPPER: Route unsuitable for wide vehicles


LOWER: Route unsuitable for long vehicles


Location of a parking place that all vehicles can use

Distance to a parking place

Direction to a parking place


Location of and distance to an emergency telephone with a parking place

Distance to an emergency telephone with a parking place (Alternative variant)

Location of and distance to an emergency telephone without a parking place


Hospital that has 24hr A&E facilities

Hospital that does not have 24hr A&E facilities

Hospital that does not have any A&E facilities


Hospital that has 24hr A&E facilities

Hospital that does not have 24hr A&E facilities

Hospital that does not have any A&E facilities


Temporary signs are put out when vehicles are to be stopped for an excise licence check or vehicle inspection. These signs may apply to specific types of vehicle such as goods vehicles or buses, and they may indicate which lanes to use.

These temporary signs are put out by the police to warn of potential danger or an accident ahead and the need to proceed with caution

n an emergency, drivers may be diverted onto the hard shoulder and told when to rejoin the main carriageway

Area where, from time to time, police carry out checks on the speed of vehicles

Parking area reserved for police vehicles (the sign might say "Police vehicles only") or additionally, when varied to "Authorised vehicles only", vehicles such as those of the Highways Agency's Traffic Officers

These temporary signs are used when traffic surveys are taking place. Vehicles may be directed to stop at the census point

Signs used where there are separate entry and exit points to and from a car park, private access road or private property

Signs for drivers leaving the public road

Signs for drivers entering from the public road

The depth of water at a ford may be shown in both metric and imperial units, or in imperial units only