Practice question

What is the 'Alcohol Interlock Device' (Alkohol-Interlock / Alkolock) installed on certain commercial passenger school buses?

  1. A passive cabin sensor that estimates whether any passenger has consumed alcohol
  2. A breath-testing unit linked to the starting circuit that requires the driver to provide an accepted sample before the vehicle can be started
  3. A breathalyzer for passengers boarding the bus
  4. A tachograph function that records alcohol limits but does not control starting

Answer: B — A breath-testing unit linked to the starting circuit that requires the driver to provide an accepted sample before the vehicle can be started

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