What does the no heavy trucks sign mean?

This sign is posted at the start of a residential street. Who does it apply to?

Heavy trucks, which have to use another route

The restriction is aimed at heavy vehicles whose weight, noise and turning circle do not suit the street. Cars and light local traffic are not what the sign is about, and where hours or exceptions apply a plate under the sign says so.

You are driving a loaded moving truck and this sign is posted at the start of a residential street on your route. What should you do?

Take another way around, since heavy trucks are not permitted here

The sign keeps heavy vehicles off roads that cannot carry their weight or where their turning circle and noise do not fit, and it applies to the vehicle you are driving rather than to the job you are doing. Where a local delivery exception exists, a tab under the sign says so.

You are driving a car and this sign faces you at the start of a residential street. What does it mean for you?

You may use the street, because the restriction is on heavy trucks

The sign keeps heavy trucks off a road that cannot carry their weight or should not take their noise and turning circles. A private car is not what it restricts. Read every restriction sign for the vehicle or movement pictured in it, because the ring and the slash on their own only tell you that something is forbidden.

You are driving a heavy truck and this sign is posted where your route turns onto a residential street. What must you do?

Take a route that does not use this street

The sign keeps heavy vehicles off roads that cannot take their weight, their turning circle or their noise, and it applies to the vehicle rather than to the errand. Where local deliveries are allowed, that permission is spelled out on a plate under the sign. If nothing says so, the street is closed to you.

You are running a heavy combination and your navigation device sends you down a street where this sign faces you.

Do not turn in, and find another route, because the sign closes the road to your vehicle

A sign banning heavy trucks closes the road to your vehicle, and only a tab on the sign itself can grant an exception. Streets carry these signs because of a weak structure, a tight corner, a low overhead or a decision about a residential area, and none of that changes because you have a load for the neighbourhood. A device that does not know what you are driving cannot overrule the sign, so plan the route before you are committed at the corner.