Motorway signals (see ‘Light signals controlling traffic’) are used to warn you of a danger ahead. For example, there may be an incident, fog, a spillage or road workers on the carriageway which you may not immediately be able to see.
Motorway signals (see ‘Light signals controlling traffic’) are used to warn you of a danger ahead. For example, there may be an incident, fog, a spillage or road workers on the carriageway which you may not immediately be able to see.