Traffic Light Control Systems
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Questions and Answers

What is a 'phase' in the context of traffic signal terminology?

  • Equivalent to the concept of a 'stage' in the UK and USA
  • A period of time during which a set of traffic movements receive a green signal (correct)
  • A signal group terminology in PTV VISSIM
  • A simple clockwork mechanism
  • What was the first automated system for controlling traffic signals?

  • Simple clockwork mechanisms
  • Sophisticated computerized control systems
  • Developed by Leonard Casciato and Josef Kates (correct)
  • Used in Australia and New Zealand
  • Which control system is used to minimize delay to people using the junction?

  • Simple clockwork mechanisms
  • PTV VISSIM signal group terminology
  • Sophisticated computerized control and coordination systems (correct)
  • Inventors Leonard Casciato and Josef Kates' system
  • What is a 'signal group' in the context of traffic signal terminology?

    <p>An electrical output from the traffic signal controller</p> Signup and view all the answers

    When was the first automated system for controlling traffic signals used?

    <p>1954</p> Signup and view all the answers

    What was the year when the first automated system for controlling traffic signals was used in Toronto?

    <p>1954</p> Signup and view all the answers

    In Australia and New Zealand, what is a 'phase' in the context of traffic signal terminology?

    <p>A period of time during which a set of traffic movements receive a green signal</p> Signup and view all the answers

    What is the function of sophisticated computerized control and coordination systems for traffic lights?

    <p>Self-adjust to minimize delay to people using the junction</p> Signup and view all the answers

    What is the equivalent concept of a 'phase' in the UK and USA traffic signal terminology?

    <p>Stage</p> Signup and view all the answers

    What is the terminology used by PTV VISSIM for one electrical output from the traffic signal controller?

    <p>Signal group</p> Signup and view all the answers

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