Prohibitory traffic sign

Prohibitory traffic signs are used to prohibit certain types of manoeuvres or some types of traffic.

No admittance to unauthorised personnel, usually shown as a red circle with a white rectangle across its face. It is often used for one-way traffic.

Australia

Botswana, Lesotho, Namibia, South Africa, Swaziland, Tanzania

Canada

New Zealand

Philippines

Thailand, Cambodia

United States

These signs denote that the road is only for traffic coming in the opposite direction. Used at intersections to roads with one-way traffic or ramps.

Canada

United States

No admittance for vehicles. It used on closed roads.

New Zealand

Traffic is not permitted to continue straight, and must usually turn. These may occur at an intersection with incoming one-way traffic.

United States, Canada

Motor vehicles are not permitted in this region.

United States

Motorcycles are not permitted in this area.

United States

Bicycles are not permitted in this area.

Australia

Philippines

United States, Canada

Heavy goods vehicles are not allowed.

Australia

Canada

Canada (Québec)

New Zealand

Philippines

United States

United States: No commercial vehicles

Buses are not permitted.

Australia

Pedestrians are not allowed on the road, but may use a footpath instead.

Australia

Philippines

Philippines (use overpass)

Philippines (use pedestrian crossing)

Pedestrians and bicycles are not permitted, but may be allowed on a footpath.

Canada

United States

United States (also no motorcycles are allowed)

Either for all vehicles or with some exceptions (emergency vehicles, buses). These are usually to speed up traffic through an intersection or due to street cars or other right of ways or if the intersecting road is one-way. Indicated near-universally by an arrow making the prohibited turn overlaid with a red circle with an angular line crossing it.

Australia

Botswana, Lesotho, Namibia, South Africa, Swaziland, Tanzania

New Zealand

Philippines

Saudi Arabia

Thailand, Cambodia

United States, Canada

Australia

Botswana, Lesotho, Namibia, South Africa, Swaziland, Tanzania

New Zealand

Philippines

United States, Canada

Canada

United States

Australia

Botswana, Lesotho, Namibia, South Africa, Swaziland, Tanzania

New Zealand

Philippines

Saudi Arabia

United States, Canada

...
Wikipedia