In a tunnel, drivers must:

Question: In a tunnel, drivers must:

Answer options:

• Use high beams ✅ Use low-beam headlights and not stop or change lanes unnecessarily
• Honk
• Drive slowly only

Correct answer: Use low-beam headlights and not stop or change lanes unnecessarily

Explanation: Under Quebec's Highway Safety Code, driving through a tunnel requires using low-beam headlights to ensure vehicle visibility without blinding other motorists, while avoiding unnecessary stopping or lane changes to minimize collision risks in a confined space. High beams are incorrect because their intense glare reflects dangerously in enclosed spaces, and honking is prohibited unless to warn of immediate danger. Driving slowly only is incorrect because maintaining a steady, predictable flow of traffic at the posted speed limit is safer than driving excessively slow. This rule is highly relevant for the SAAQ exam, which frequently tests specific driving behavior required for specialized roadway infrastructure.