1 Lane (supplemental tab) sign

What does the 1 Lane (supplemental tab) sign mean?

A supplemental tab indicating a single lane condition ahead, used with a warning sign.

Other Warning signs

Dangerous goods: flammable

TDG-FLAMMABLE

Curve to the right

CURVE-RIGHT

Hairpin curve

HAIRPIN-CURVE

Practice with real test questions

Take a free knowledge-test practice round in your province. Sign-recognition questions are heavily represented on every Canadian provincial test.