Weather Hazards, Aquaplaning & Surface Grip

Braking immediately is required. A car door opening directly into your travel lane at 15 meters represents an acute obstacle and a potential collision with an exiting driver. You must brake immediately to halt before the open door (Article 19, RVV 1990). Why other options are incorrect: • Release accelerator: Releasing the accelerator only produces weak engine braking and covers too much distance before slowing down. At 50 km/h, the vehicle would strike the hazard before coming to a stop. • Do nothing: Doing nothing in this situation completely ignores an acute, life-threatening hazard. Maintaining 50 km/h results in an inevitable, high-impact collision.

Doing nothing is correct. Small birds feeding on the sidewalk do not constitute a road hazard. Braking or releasing the accelerator unexpectedly on a main urban thoroughfare with a green light disrupts traffic flow and creates unnecessary risks (Article 19, RVV 1990). Why other options are incorrect: • Brake: Braking on a clear, safe road section causes unexpected deceleration and startles drivers behind you. This can trigger a dangerous accordion phantom traffic jam or rear-end collision. • Release accelerator: Releasing the accelerator is unnecessary because traffic flow is completely unobstructed and your following distance is safe. Unprovoked deceleration disrupts the steady flow of traffic.

Braking immediately is required. Deep standing water across both tracks at 80 km/h will cause severe aquaplaning and loss of steering control if entered at highway speed. You must brake beforehand while the tires still have road grip to enter the water at a safe, controlled speed (Article 19, RVV 1990). Why other options are incorrect: • Release accelerator: Releasing the accelerator only produces weak engine braking and covers too much distance before slowing down. At 50 km/h, the vehicle would strike the hazard before coming to a stop. • Do nothing: Doing nothing in this situation completely ignores an acute, life-threatening hazard. Maintaining 50 km/h results in an inevitable, high-impact collision.

Releasing the accelerator is correct. At 60 meters, there is no acute danger, but there is a latent hazard: the car waiting behind the garbage truck might pull out into your lane to pass it. Easing off the accelerator lowers your speed gently and prepares you to brake if the oncoming car emerges (Article 19, RVV 1990). Why other options are incorrect: • Brake: Braking forcefully is excessive here because the hazard is still latent and not yet directly obstructing your path. Harsh braking needlessly risks causing a rear-end collision with following traffic. • Do nothing: Doing nothing is too passive and fails to prepare you for the developing risk ahead. You must release the accelerator to reduce stopping distance and hover your foot over the brake pedal.