Home / Alberta / Questions / Road Signs Road Signs Report A 'Tunnel Ahead' sign: A Bridge B Tunnel — turn on headlights C Underpass D No entry Show Answer & Explanation Correct Answer: B. Tunnel — turn on headlights Tunnels are dim; no lane changes inside. Previous Next More Road Signs Questions A 'Pavement Ends / Gravel Ahead' sign: A red octagonal sign means: A downward-pointing triangle with red border: A red circle with white horizontal bar: Alberta school zone speed limit when posted: Often Missed All Alberta Questions Smart Practice Mock Exam Road Signs Guide
