Ontario MTO Truck Knowledge Practice Test

If marked, a driver must stop at what before moving?

1. A yellow line

2. A green light

3. A painted stop line

4. A blue line

The correct answer is: A painted stop line

The correct answer indicates that a driver must stop at a painted stop line before proceeding. The painted stop line is a critical traffic control device that signals the point at which vehicles must halt to ensure safety and compliance with traffic regulations. This practice is essential at intersections, pedestrian crossings, or when approaching traffic signals, particularly stop signs. While yellow lines serve as guidelines to separate lanes of traffic or indicate no-passing zones, they do not mandate a stop. A green light indicates that it is safe to proceed; thus, stopping is unnecessary. A blue line often signifies parking restrictions or spaces and does not pertain to stopping requirements. Therefore, the painted stop line is a designated indicator for halting a vehicle, ensuring both the driver's safety and the safety of others on the road.