Safety Sight Distance Factors
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Questions and Answers

What is the main cause of tsunamis?

  • Abnormal oscillations of the water level
  • Small fluctuations of the water level
  • Sudden large-scale sea floor movement (correct)
  • Micro-scale variations of the atmospheric pressure

    • What is the purpose of chevron signs?

  • To indicate the alignment of the road ahead (correct)
  • To mark the entrance to a harbor
  • To provide traffic instructions
  • To mark the edge of the road formation

    • What is the recommended number of lines of message for traffic instruction signs?

  • 3 (correct)
  • 6
  • 5
  • 4

    • What does the term 'highway' excludes?

    <p>Roadways within private sectors</p> Signup and view all the answers

    What is seiche?

    <p>Abnormal oscillations of the water level</p> Signup and view all the answers

    What is the purpose of guide posts?

    <p>To mark the edge of the road formation</p> Signup and view all the answers

    What is one of the characteristics of the driver that affects the provision of safety sight distance?

    <p>Alertness of the driver</p> Signup and view all the answers

    What is one of the characteristics of the vehicle that affects the provision of safety sight distance?

    <p>Type of vehicle</p> Signup and view all the answers

    What is one of the characteristics of the road environment that affects the provision of safety sight distance?

    <p>Road geometry</p> Signup and view all the answers

    What are the two components of stopping sight distance?

    <p>Reaction distance and braking distance</p> Signup and view all the answers

    What is one of the criteria used for the establishment of sag vertical curves?

    <p>Headlight sight distance</p> Signup and view all the answers

    What is used as the datum line for design of port facilities in accordance with charts?

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

    What percentage of tide is guaranteed safe for ships based on the International Water Way Congress?

    <p>98%</p> Signup and view all the answers

    Which of the following contour characteristics is not true?

    <p>Contours point upstream.</p> Signup and view all the answers

    What is the recommended slope of cut surfaces according to NSCP?

    <p>1H:1V</p> Signup and view all the answers

    What is the recommended slope of fill surfaces according to NSCP?

    <p>1H:1V</p> Signup and view all the answers

    When is drainage facilities and terracing required for cut or fill slopes according to NSCP?

    <p>Steeper than 1H:1V</p> Signup and view all the answers

    What benefits does shoulder paving provide on curve alignments?

    <p>All of the above</p> Signup and view all the answers

    Where are edge lines typically installed?

    <p>In accident prone areas</p> Signup and view all the answers

    What is one of the purposes of installing edge lines?

    <p>To make driving safer at night</p> Signup and view all the answers

    What factors affect the provision of safety sight distance?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is a characteristic of the road environment that affects safety sight distance?

    <p>Road surface and road illumination</p> Signup and view all the answers

    What is an important practice when measuring vertical or zenith angles?

    <p>All of the above</p> Signup and view all the answers

    In which of the following situations is safety sight distance particularly important?

    <p>During inclement weather conditions</p> Signup and view all the answers

    What is an important consideration to avoid bias in surveying?

    <p>Selecting a sampling method that gives every possible combination of people an equal chance</p> Signup and view all the answers

    When is the use of safety barriers warranted?

    <p>Always, regardless of the clear zone conditions</p> Signup and view all the answers

    What is the maximum number of words that should be used in messages painted on pavement?

    <p>Five words or less</p> Signup and view all the answers

    What are the four types of pavement and curb markings?

    <p>Longitudinal lines, transverse lines, stop line, and center line</p> Signup and view all the answers

    What is the standard water depth of berth for a ship with a draft of 7.5 m?

    <p>9.5 m</p> Signup and view all the answers

    What is the primary goal of random sampling in surveying?

    <p>To minimize bias in the sample</p> Signup and view all the answers

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