What does the road narrows ahead sign mean?
The pavement narrows ahead. Keep to your lane
This sign warns that the pavement narrows ahead. Keep to your lane, watch for oncoming traffic, and be ready for less room on the road.
Why the other answers are wrong
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A divided highway begins ahead
The divided highway begins sign shows the road splitting into two separated roads with a median between them. On this sign the two lines squeeze together instead, so the pavement is getting narrower.
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A passing lane is ahead
A passing lane would give you more room, not less. On this sign the two lines close in toward each other, which is the cue for pavement getting narrower, so stay in your lane.
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The road widens to two lanes ahead
This is the reverse of what the sign shows. Widening would be drawn as lines spreading apart, while these lines converge and stay narrow, warning you the pavement is about to shrink.
Quick way to remember
The two edges of the sign squeeze toward each other.
Based on the official Ontario MTO Driver's Handbook.
Reading it once is not enough
Drill this question in a scored round and find out what else you are shaky on.
Practise Road Signs: Warnings
