Emergency Vehicle Approach in a Construction Zone
You are southbound on a four-lane road in Red Deer approaching an active construction zone. The right lane is closed by cones starting 50 m ahead, so traffic is merging left. You are in the right lane at 40 km/h with a line of cars beside you in the left lane. Behind you, an ambulance with lights and siren is closing fast. Ahead, the merge point is congested and vehicles are stopping. There is a concrete barrier on your right with no shoulder.
1. What must you do when the ambulance approaches, and what makes it difficult here?
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Alberta law requires you to yield to an emergency vehicle using lights and siren - pull to the right and stop, or clear a path, as soon as it is safe.
Why it's hard here:
- No right shoulder - a concrete barrier means you cannot pull right and stop.
- Left lane is full - you can't simply move left into a gap that doesn't exist.
- Merge congestion ahead - cars are stopping, so there's no open lane for the ambulance to thread through.
- Cones at 50 m - the right lane is about to end, limiting your options.
Correct response: Do not panic-stop in the travel lane or swerve into the barrier. Instead, slow gradually, signal, and move left into the nearest safe gap if one opens, or hold your position and let the ambulance find a path - the ambulance driver can see the congestion too. The priority is to avoid creating a new hazard (a sudden stop or swerve) while giving the emergency vehicle room as soon as it's genuinely available. Blocking is a violation, but causing a collision while yielding is worse.
2. The ambulance is now directly behind you and the left lane still has no gap. What is the safest action, and what should you not do?
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Safest action: maintain a predictable, slow speed and continue toward the merge point where space will open, while actively looking for the first safe gap to move left and let the ambulance pass. If a gap appears, signal and move left smoothly; if not, keep rolling slowly rather than stopping dead in a live lane with traffic behind.
Do not:
- Slam on the brakes in the travel lane - the cars behind may not expect it, and you'd block the ambulance further.
- Swerve right into the barrier or onto the cones.
- Accelerate to outrun the ambulance to the merge point.
- Stop in the merge taper where you'd become an obstacle.
Judgement: yielding to an emergency vehicle means clearing a path safely, not stopping wherever you happen to be. When there's no shoulder and no gap, the right move is controlled, predictable movement to the first opening - the ambulance driver is trained to work around a congested but predictable flow, and a sudden stop is what causes the secondary collision.