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Safety practice questions

20 questions from the flagger and work zone traffic control practice test.

Safety practice test

10 questions, graded as you go, with the reason for every answer. No sign-up.

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Sample questions

How should the lights at a night flagger station or work area be aimed?

  1. Straight toward oncoming traffic, to get drivers' attention
  2. Straight up, so the light reflects down from above
  3. So they light the area without glaring into drivers' eyes
  4. Toward the flagger's face from the open-lane side
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C. So they light the area without glaring into drivers' eyes

Floodlights must not produce disabling glare for approaching road users, flaggers or workers. Lights aimed at oncoming traffic blind drivers just as they reach the flagger.

Reference: MUTCD Part 6, flagger stations (2009 Edition Section 6E.08) and lighting devices (Section 6F.82)

After a light tower is set up at a night flagger station, what is the best way to check it for glare?

  1. Drive through the zone from each approach and look
  2. Measure the tower height with a tape measure
  3. Ask the flagger whether the light seems bright
  4. Compare the lamp wattage with the plan sheet
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A. Drive through the zone from each approach and look

Glare is judged from where drivers see it, so the set-up should be driven and observed from each direction and the lights re-aimed if needed. The flagger's view from under the light says little about what drivers see.

Reference: MUTCD Part 6, flagger stations (2009 Edition Section 6E.08) and lighting devices (Section 6F.82)

Why does night work call for more visible devices and apparel than the same work in daylight?

  1. Traffic volumes are always higher at night than in the day
  2. Speed limits are raised at night on most highways
  3. Retroreflective material works only in daylight
  4. Drivers see less, and more of them are tired or impaired
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D. Drivers see less, and more of them are tired or impaired

At night drivers see less detail, and a larger share are drowsy or impaired, often at higher speeds because traffic is light. Retroreflective material works at night, which is exactly why it is required.

Reference: MUTCD Part 6, flagger stations (2009 Edition Section 6E.08) and lighting devices (Section 6F.82)

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