Advisory Speed (plaque) Sign (W13-1P)
The advisory speed (plaque) sign is a square and its colour is yellow. It is a warning sign: something ahead — a curve, a crossing, a change in the road — needs you to slow down and adjust what you are doing.
At a glance
| Shape | square |
|---|---|
| Color | yellow |
| Category | Warning signs |
| MUTCD code | W13-1P |
| Legend | MPH |
How the test asks about it
- 1.
A yellow plaque like this under a curve warning sign shows:
Not quiteCorrect answer: A — The recommended safe speed for that curve in good conditions
Advisory speeds are recommendations for ideal conditions. They are not separately enforceable as a limit, but exceeding one in rain or at night is exactly how cars leave the road.
Because it is not a legal limit, drivers dismiss it. It is a measured figure for a dry road — in the wet it is already optimistic.
Related signs
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