Special Light and Sound Signals

The essentials

This topic concerns emergency vehicles using blue, red or other special light signals and audible signals. The goal is to recognize situations in which unobstructed passage must be provided and to avoid interfering with the work of special vehicles.

What to remember

An emergency vehicle using special light and sound signals must be allowed to pass without obstruction when it is operating under the special legal regime. The mere presence of a beacon does not always have the same legal effect: its colour, whether it is switched on, and the use of a special audible signal matter. When clearing the way, a driver must not create a new danger with a sudden, unpredictable maneuver.

Listen to the explanation

Educational material; not a substitute for the current official rules.

Try questions on this topic

A small practice set from this subtopic. The full question bank and saved progress are available in your account.

Which vehicle must you give way to if you intend to make a left turn at an intersection? Which vehicle must you give way to if you intend to make a left turn at an intersection?
  1. None
  2. Bus only
  3. Only to a truck with flashing beacon on
  4. Both vehicles

The correct answer: Bus only

The correct answer is to yield only to the bus. When turning left, you give way to the oncoming bus traveling straight. The truck’s yellow or orange beacon only warns of special work or danger and does not grant priority. The truck also faces a Give Way sign and must wait.

In the case of a flashing yellow traffic light In the case of a flashing yellow traffic light
  1. We must wait for the green light
  2. We will cross the intersection yielding to the trolleybus driver
  3. We will cross the intersection simultaneously with the light passenger vehicle

The correct answer: We will cross the intersection yielding to the trolleybus driver

The correct answer is “We will cross the intersection yielding to the trolleybus driver”. Link the number to the vehicle type, road status and any special restriction rather than memorising it in isolation. Remember the number together with the vehicle type and road type.

This signal from the controller means that traffic is allowed for: This signal from the controller means that traffic is allowed for:
  1. Blue and green cars. Red, yellow, and white are prohibited.
  2. Blue, red, and green cars. Yellow and white are prohibited.

The correct answer: Blue, red, and green cars. Yellow and white are prohibited.

The correct answer is “Blue, red, and green cars. Yellow and white are prohibited.”. The active traffic signal or controller instruction comes first, while movement already started and intersecting lawful paths must still be considered. Remember: a permissive signal allows movement but does not cancel a duty to yield where paths lawfully intersect.

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