Road signs can be defined as symbolized, illustrative guidance for road users for safer and more convenient travelling. If you drive a car, ride a bike or just walk, it is mandatory that you obey all the Road signs in Nigeria.
Road signs can be classified into 3 main types of road signs based on their main purposes:
• Regulatory signs
• Warning signs
• Informative signs
Regulatory Signs are mostly circular in shape and are of two types. Those with red & yellow circles are Prohibitive signs.
Those with blue circles but no red border are MANDATORY SIGNS. They give positive instructions and are regulatory signs. Regulatory signs are mandatory and should be followed. They are mostly prohibitory or showing directions.
Warning Signs are usually triangular in shape, with a red perimeter. Warning signs inform you of road dangers ahead. Neglecting this kind of signs put your life at risk. The only warning sign with an inverted triangle means YIELD or GIVE Way.
They are usually rectangular in shape and provide guidance information.
Informative signs which inform of specific places, road conditions, road construction sites or speed limits for particular areas.
The common traffic signs in Nigeria from all categories are covered in this post.
REGULATORY SIGNS (Prohibitory)
Stop sign alert drivers to intersections and other areas where traffic may be travelling in opposite or crossing directions.
Stop signs are likely the most iconic of all traffic signs. Both the shape and colour are important to how a stop sign is recognized and understood.
The yield sign is similar to stop signs, but used in less dangerous situations. Used at passive cross streets or traffic circles, yield signs help to keep traffic flowing, while still allowing drivers from different directions to pass through.
No Parking Sign
With No Parking Signs, drivers are informed that they can’t park in specific locations in the parking lot at the specified time. No Parking Signs alert drivers to keep all fire lanes, loading zones, and emergency vehicle zones clear.
This indicates that there is 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.
No Left Turn Sign
The no left turn sign is a turn prohibition sign that is designed to prevent an accident from occurring by informing drivers that turning left is prohibited.
No Right Turn Sign
No Right Turn Sign is designed with a circular prohibition symbol to communicate that turning right at the intersection or junction is not permitted. They are often used at intersections or junctions where it may not be safe to do a right turn.
No U-Turn Sign
This road sign prohibits U-turns. You can make a left turn at this intersection, but making a complete turn to go in the opposite direction is not allowed.
The no overtaking road sign is circular with a red border meaning that it is giving drivers an order. As the no-overtaking sign is regulatory, it is illegal to overtake. The no overtaking restriction ends when the lines in the road change from a continuous white line, to a broken line.
Width restriction Sign
This indicates that are restrictions for vehicles of a particular width on a road, street or approach to a bridge. These are designed to limit the size and weight of vehicles that use the road.
Load restriction sign
This sign indicates that a vehicle weighing more than 5 tonnes cannot use the road further as there may be a bridge, which cannot bear the weight beyond 5 tonnes, or the road is soft to accommodate the weight of the vehicle.
Height restriction sign
This sign applies to all vehicles as it is a height warning and shows the height restriction that applies to the road ahead indicated by the above and below triangular shapes.
Speed limits are generally indicated on a traffic sign reflecting the maximum permitted, it is expressed as kilometres per hour (km/h) and/or miles per hour (mph).
This is a circular white sign with a black diagonal band signifying the lifting of any other speed restriction.
No motorcycles sign
It indicates that motorcycles are not permitted in the area.
No tricycle sign
It indicates that tricycles are not authorized in the area.
No pedestrians or bicycles sign
Pedestrians and bicycles are not permitted but may be allowed on a footpath.
No Horn sign
Sounding your horn is not allowed for vehicles in some areas, most commonly in school zones, villages, or near hospitals or churches.
REGULATORY SIGNS (Mandatory)
One way traffic sign
The one-way traffic sign is a regulatory sign. Drivers encountering a one-way sign must travel in the direction that the sign is pointing. One way signs designate the direction in which traffic is travelling. Drivers must not travel in the opposite direction of the one way sign due to the risk of a head-on collision.
This points to an emergency diversion route that guides traffic around the closed section, bringing it back onto the same road further along its length.
This informs that the road user of the end of the emergency diversion route.
The sign advises that you are approaching a roundabout.
Compulsory Cycle Track Sign
This sign indicated the route cyclist must take. Cycle lane road signs are important to not only cyclists but pedestrians and motorists.
Pedestrian Track Sign
This sign informs you of a pedestrian track.
Divided 2-Lanes 2-Way Ahead Sign
This sign indicates that there are two traffic lanes that are separated ahead.
2-Lanes 2-Way Ahead Sign
This sign indicates that there are two traffic lanes that are not separated ahead.
4-Lanes Undivided 2-Way Ahead
This sign informs the road user that there are 4 lanes undivided for both directions of traffic.
Divided 4-Lanes 2-Way Ahead
This sign informs the road user that there are 4 lanes divided for both directions of traffic.
This informs the road user to stop or slow down for temporary traffic control.
Speed Limit (Minimum) sign
This informs the road user of the minimum speed limit in the area.
Railway Level Crossing with Gate
This sign warns you that you are approaching a level crossing with a gate. A level crossing is an intersection where a railway line crosses a road or path, or in rare situations an airport runway, at the same level.
Railway Level Crossing without Gate
This sign warns you that you are approaching a level crossing without a gate.
Supplementary Intermediate Level Crossing signs or Countdown sign
This sign indicates that there is a countdown for the level crossing.
General Caution Sign
A warning sign is a type of sign which indicates a potential hazard, obstacle or condition requiring special attention. Some are traffic signs that indicate hazards on roads that may not be readily apparent to a driver.
‘Y’ Junction Sign
This informs you of that a three-way junction (or three-way intersection)is ahead. A Y junction (or Y intersection) generally has three arms of equal size.
This also informs you of that a three-way junction ahead. A T junction (or T intersection) also has three arms, but one of the arms is generally a minor road connecting to a larger road.
This informs that the road will narrow i.e reduce in width ahead. The road narrows sign should be used where a road with one lane gets narrower on both sides enough to potentially be dangerous.
This show that the road will increase in width ahead.
This sign indicates that there is a narrow bridge approaching and the driver needs to slow down and watch out for oncoming vehicles.
This sign informs you that you are legally required to give way to pedestrians, especially at crossings.
Children crossing sign
This informs the road user that there might be children crossing and to slow down and watch out.
Beware of animals sign
This sign advises the driver to be careful as animals might wander to the road.
Road work sign
This informs road users to slow down and be careful as there is construction/works on the road ahead.
This sign info directs you to give way to any vehicle entering or approaching the intersection from your right. if you are turning right, you must give way to oncoming vehicles going straight through the intersection or turning left.
The sign informs you of an intersection of two or more roads ahead.
Long Grade Dangerous hill
This sign indicates that there is a dangerous hill ahead.
Dangerous right bend sign
The sign indicates a dangerous right bend in the road ahead.
Dangerous left bend sign
The sign indicates a dangerous left bend in the road ahead.
The sign advises that you are approaching a roundabout.
Slippery When Wet traffic sign
This is used to indicate that the roadway may be especially slick and hazardous when it is wet or raining, and motorists should take extra caution when driving.
Falling Rock sign
The is the sign to indicate a risk of falling or fallen rocks onto the junction from either side, its variants indicate whether they may fall from the Right or from the Left.
Uneven Road sign
This sign warns you of an uneven road ahead. It might have multiple severe bumps and general uneven surfaces that could throw your vehicle off its line, so slow down. Vehicles with low suspension could be at risk of scraping the road surface.
Loose chippings are loose gravel or stone fragments on a road surface and form a hazard to vehicles using that road. It may come from the road’s chip seal.
As stated earlier, they are usually rectangular in shape and provide guidance information.
Informative signs which inform of specific places, road conditions, road construction sites or speed limits for particular areas. They are self-explanatory.