Road Signs, Signals and Markings
What this domain tests
The Road Signs, Signals and Markings section checks whether you can read the road ahead from shapes, colours, symbols, light phases and painted lines, and then act early enough to stay safe. Nigerian practice follows international sign families, so shape and colour matter as much as the picture.
Core rules
- Warning signs are triangles with a red border and white field; they warn of bends, junctions, humps, pedestrians or road works. Slow down before the hazard, not on it.
- Regulatory signs are circles. Red-bordered circles prohibit (no entry, no overtaking, speed limit); blue circles give mandatory instructions such as turn left or keep left.
- Stop is the red octagon. Give way is the inverted triangle. Informatory signs are usually rectangular.
- A steady red light means stop behind the stop line. Amber means stop unless you are so close that stopping safely is impossible; it is not a signal to accelerate. Green means proceed only when the junction is clear.
- A continuous yellow centre line means do not cross or straddle it. Broken white lane lines may be crossed only when safe. Zebra crossings give pedestrians priority.
Worked example
You approach a blind bend and see a continuous yellow line plus a warning triangle for a bend. A slow truck is ahead. The correct decision is to hold back: the triangle tells you the bend is hazardous and the yellow line forbids crossing, even if the opposite lane looks empty.
Traps that cost marks
Treating amber as go; obeying the light but ignoring the stop line; crossing a continuous line to overtake; and reading only the symbol while missing the sign shape or colour.