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Question

Difficulty: HardNavigating Vehicle Blind Spots

You are driving in the left-hand lane of a three-lane motorway and plan to move out into the middle lane to overtake a slower lorry. You have checked your rear-view and right-side exterior mirrors and applied your right indicator. Why is it vital to carry out a final check of your right-hand blind spot before changing lanes?

  1. A
    To confirm that the lorry driver ahead has seen your indicator and slowed down
  2. To check for a vehicle in the right-hand lane that may be moving into the middle lane at the same timeAnswer
  3. C
    Because exterior convex mirrors completely reverse the perceived direction of following traffic
  4. D
    To ensure that large goods vehicles behind you are maintaining a two-second following gap

Answer

To check for a vehicle in the right-hand lane that may be moving into the middle lane at the same time
When travelling in the left-hand lane of a three-lane motorway, another vehicle travelling in the right-hand lane may decide to move into the middle lane at the exact same moment. Because standard exterior mirrors do not show vehicles positioned slightly behind and two lanes across, a prompt glance over the right shoulder into the vehicle blind spot is essential to prevent two vehicles colliding in the middle lane.

Step-by-Step Solution

1
Assess the multi-lane motorway environment and potential traffic movements across all three lanes.
Identified that traffic in the right-hand lane may also intend to change into the middle lane simultaneously.
On a three-lane carriageway, the middle lane can be targeted by vehicles from both the left and right lanes at the same moment.
2
Analyze mirror coverage limitations versus physical observation.
Exterior side mirrors leave a blind spot area over the right shoulder where a vehicle transitioning from lane 3 to lane 2 cannot be seen.
Mirrors only cover specific angles behind and alongside; areas level with or slightly behind the rear pillars require a direct head check.
3
Execute the shoulder blind-spot check before crossing lane boundaries.
Ensures the target lane space is entirely clear and no other driver is moving into the exact same space.
Prevents sideswipe collisions caused by simultaneous manoeuvres into the same lane space.

Key Concept

Identifying simultaneous lane change hazards and unmonitored lateral zones through physical blind-spot checks on multi-lane carriageways.
Estimated Time:1m 0s
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Topics

Navigating Vehicle Blind Spots

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