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Difficulty: MediumPedestrians

You have stopped at a puffin crossing while a pedestrian crosses slowly. What feature controls when the red traffic light changes back to green?

  1. A
    A fixed timer that automatically switches the light to green after fifteen seconds
  2. Electronic sensors that detect the pedestrian and hold the red signal until they reach the pavementAnswer
  3. C
    A flashing amber signal that allows you to proceed immediately if you judge the pedestrian is clear of your lane
  4. D
    A driver override system activated by flashing your headlights at the sensor unit

Answer

Electronic sensors that detect the pedestrian and hold the red signal until they reach the pavement
Puffin crossings are user-friendly intelligent crossings fitted with infrared or optical sensors. These sensors detect pedestrians on the crossing and automatically maintain the red traffic light for drivers until the pedestrian has safely reached the pavement.

Step-by-Step Solution

1
Identify the type of pedestrian crossing specified in the scenario
The crossing is a puffin crossing (Pedestrian User-Friendly Intelligent crossing).
Different crossing types (pelican, puffin, toucan, zebra) operate with different signal sequences and control mechanisms.
2
Recall how puffin crossings manage the signal timings for pedestrians
Puffin crossings are equipped with overhead sensors that monitor the crossing area.
These sensors ensure that slower-moving pedestrians have enough time to cross safely by holding the red signal to vehicular traffic until they reach the other side.

Key Concept

Puffin crossing sensor management and pedestrian safety
Estimated Time:45s
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Topics

Pedestrians

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