Prohibitory traffic sign

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, Eswatini, Lesotho, Namibia, South Africa, Tanzania, Zimbabwe
• 
  Canada
• 
  New Zealand
• 
  Norway, Indonesia
• 
  Philippines
• 
  Russia, Belarus, Lithuania, Georgia, Armenia, Azerbaijan, Kazakhstan, Mongolia
• 
  Sweden
• 
  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.

• 
  Australia
• 
  Canada
• 
  Norway
• 
  United States

No admittance for vehicles. It is used on closed roads.

• 
  New Zealand
• 
  United Kingdom, and most European countries
• 
  United States

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.

• 
  Norway
• 
  Sweden
• 
  United States

Motorcycles are not permitted in this area.

• 
  Norway
• 
  Sweden
• 
  United States
• 
  Indonesia

Heavy goods vehicles are not allowed.

• 
  Australia
• 
  Canada
• 
  Canada (Québec)
• 
  New Zealand
• 
  Norway
• 
  Philippines
• 
  Sweden
• 
  United States

Buses are not permitted.

• 
  Australia

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

• 
  Australia
• 
  Norway
• 
  Philippines
• 
  Philippines (use overpass)
• 
  Philippines (use pedestrian crossing)
• 
  Russia, Belarus, Georgia, Armenia, Azerbaijan, Kazakhstan, Mongolia
• 
  Sweden

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

• 
  Canada
• 
  Norway
• 
  United States
• 
  United States (also no motor-driven cycles are allowed[1])
• 
  Indonesia

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, Eswatini, Lesotho, Namibia, South Africa, Tanzania, Zimbabwe
• 
  New Zealand
• 
  Norway
• 
  Philippines
• 
  Saudi Arabia
• 
  Sweden
• 
  United States, Canada

• 
  Australia
• 
  Botswana, Eswatini, Lesotho, Namibia, South Africa, Tanzania, Zimbabwe
• 
  New Zealand
• 
  Norway
• 
  Sweden
• 
  Philippines
• 
  United States, Canada

• 
  Canada
• 
  United States

• 
  Australia
• 
  Botswana, Eswatini, Lesotho, Namibia, South Africa, Tanzania, Zimbabwe
• 
  New Zealand
• 
  Norway
• 
  Philippines
• 
  Saudi Arabia
• 
  Sweden
• 
  United States, Canada
• 
  Caltrans (Left turn on green arrow)

• 
  United States

• 
  Canada: No right turn and straight ahead
• 
  Canada: No left turn and straight ahead

Either overtaking is prohibited for all vehicles or certain kinds of vehicles only (e.g. lorries, motorcycles, etc...). In the USA, this is usually phrased as "no passing zone" and indicated by a rectangular, black-on-white sign on the right side of the road that says "DO NOT PASS" and/or by a solid yellow line painted on the roadway marking the left limit of traffic (centerline), and sometimes supplemented by a yellow (no passing zone) sign on the opposite side of the road (where it can be seen by a driver who is attempting to pass). Conversely, when the passing restriction is lifted, a rectangular, black-on-white sign that says "PASS WITH CARE" is placed on the right side of the road and/or the yellow centerline changes from solid to broken (indicating that passing is allowed in that direction).

• 
  Canada
• 
  Norway, typical for most parts of Europe
• 
  Philippines
• 
  Sweden
• 
  Thailand
• 
  United States

• 
  Norway
• 
  Sweden

Used to indicate a maximum permissible speed. Speed limits are posted in kilometres per hour in most countries, however the United Kingdom and United States continue to use miles per hour. Motorists are expected to be aware of this, as the majority of speed limit signs display only a number and no specific units, although some countries' signs do display the unit as well.

• 
  Australia
• 
  Canada
• 
  Germany, typical for most parts of Europe
• 
  New Zealand
• 
  Philippines
• 
  Sweden
• 
  United States
• 
  Indonesia

Used to denote that a previously posted speed limit is no longer in effect. Statutory state, local, or national speed limits usually govern speed after this point, unless another limit is signposted.

• 
  Germany, typical for most parts of Europe
• 
  Philippines
• 
  New Zealand [2]
• 
  United States

Used denote maximum weight for bridges.

• 
  Norway
• 
  Philippines
• 
  Saudi Arabia
• 
  Sweden
• 
  Indonesia

Used to denote maximum width on narrow roadways.

• 
  Norway
• 
  Philippines
• 
  Saudi Arabia
• 
  Sweden
• 
  Indonesia

Used to denote height limit on bridges and underpasses

• 
  Norway
• 
  Philippines
• 
  Saudi Arabia
• 
  Sweden
• 
  Indonesia

Used to denote maximum length.

• 
  Norway
• 
  Philippines
• 
  Sweden

Sounding your horn is not allowed for vehicles in some areas, most commonly in school zones, villages, or near hospitals or churches.

• 
  Philippines

Amongst one of the most familiar signs, this sign is used where parking is prohibited. Usually shown as a red diagonal bar inside a blue circle with a red ring in Europe and parts of Asia, and a 'P' in a red circle with a cross through in North and South America, elsewhere in Asia, Australia, Africa and Ireland. The no parking sign is a part of controlled parking zone sign, which is obsolete in Belgrade from 1997.

• 
  Australia
• 
  Botswana, Eswatini, Lesotho, Namibia, South Africa, Tanzania, Zimbabwe
• 
  Canada
• 
  France
• 
  Indonesia
• 
  New Zealand
• 
  Norway
• 
  Philippines
• 
  United States
• 
  Caltrans: No parking at Any Time (R28)

This sign is used where parking and stopping is prohibited. Usually shown as a red cross inside a blue circle with a red ring in Europe and parts of Asia, and a 'E' in a red circle with a X through in South America.

• 
  Australia
• 
  Botswana, Eswatini, Lesotho, Namibia, South Africa, Tanzania, Zimbabwe
• 
  Canada
• 
  France
• 
  Indonesia
• 
  New Zealand
• 
  Norway
• 
  Philippines
• 
  Caltrans: No stopping at Any Time
• 
  Caltrans: No stopping at Any Time (Tow-away zone)

Stop at customs that are used at border crossings, toll roads or police.

• 
  Norway
• 
  Sweden
• 
  Thailand

These are the signs that end restrictions.

• 
  Philippines

• 
  Philippines: No waiting anytime