WZTC and Flagging Test Flashcards
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Questions and Answers

What are the minimum and maximum lengths of the two-way flagger taper?

50 feet and 100 ft

How far apart are the cones spaced in the two-way taper?

20 ft

What is the minimum number of cones in a 60 ft taper?

4

At 55 mph, how far should the flagger be from the work space?

<p>335</p> Signup and view all the answers

At 55 mph, what is the minimum distance that the driver of the first approaching vehicle should be able to see the flagger?

<p>495</p> Signup and view all the answers

At 55 mph, what is the minimum distance between the flagger and the flagger sign?

<p>500</p> Signup and view all the answers

At 40 mph, what is the minimum distance between the flagger and the flagger sign?

<p>350</p> Signup and view all the answers

The flagger's escape route should be at an angle to the approaching traffic.

<p>90</p> Signup and view all the answers

At 55 mph, the recommended distance between each warning sign is?

<p>500</p> Signup and view all the answers

What are the minimum and maximum lengths of the downstream taper?

<p>50 and 100</p> Signup and view all the answers

How far apart are the cones in a downstream taper?

<p>20</p> Signup and view all the answers

How many cones are in a 100 ft downstream taper?

<p>6</p> Signup and view all the answers

At 55 mph, what is the max distance between the cones in the activity area?

<p>110 ODOT: 40</p> Signup and view all the answers

The minimum cone size for night work and/or high-speed roads and all long-term projects is?

<p>28 in</p> Signup and view all the answers

The minimum sign size is?

<p>36x36 ODOT: 48x48</p> Signup and view all the answers

Are the 'be prepared to stop' signs placed before or after the merging taper?

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

The 'be prepared to stop' flagger should be placed in the?

<p>closed lane</p> Signup and view all the answers

At 40 mph, the distance between the transition sign and the merging taper is?

<p>350</p> Signup and view all the answers

At 40 mph, with a 12 ft lane, the merging taper is how long?

<p>320</p> Signup and view all the answers

At 50 mph, the merging taper has how many cones?

<p>13 ODOT 16</p> Signup and view all the answers

At 50 mph, what is the max distance between the cones in the merging taper?

<p>50 ft ODOT 40</p> Signup and view all the answers

At 50 mph, what is the max distance between the cones along the side of the activity area?

<p>100 ODOT 40</p> Signup and view all the answers

At 40 mph, what is the distance between warning signs?

<p>350</p> Signup and view all the answers

At 40 mph, how long is the buffer space?

<p>150</p> Signup and view all the answers

When the sign is turned so that the message isn't visible, the flags must be?

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

All portable warning signs have?

<p>2 16x16 red orange flags</p> Signup and view all the answers

The minimum distance between the bottom of the portable sign and the traveled way is?

<p>1 ft</p> Signup and view all the answers

When the 'be prepared to stop' and flagger signs are not needed, they should be?

<p>turned or removed</p> Signup and view all the answers

Flaggers are not allowed to direct traffic contrary to the signals and/or signs.

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

When flagging an intersection, the signs shall be covered and the signals turned off.

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

For night flagging, the light equipment shall be located on the side of the roadway as the flagger and placed at a 15-degree angle to the flagger.

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

Advance flaggers shall use only the / paddle, not a flag.

<p>stop/slow</p> Signup and view all the answers

The advance flagger is preceded by a full set of 3 signs.

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

The advance flagger's slow/stop paddle shall have the side covered.

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

Barricade stripes point downward towards the?

<p>direction the traffic is to pass</p> Signup and view all the answers

Flagger stations may be established when it is necessary to?

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

The traffic control system should provide positive guidance to road users.

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

Flaggers must be?

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

While stopping the first vehicles, the flagger should stand?

<p>on the shoulder</p> Signup and view all the answers

After 4 or 5 vehicles have been stopped, to improve visibility the flagger may stand?

<p>near the center line</p> Signup and view all the answers

The flagger needs to master only?

<p>3 signals</p> Signup and view all the answers

To stop traffic, the flagger should?

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

To release traffic, the flagger should?

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

The parts of the traffic control zone are the?

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

Flaggers shall be preceded by at least 3 signs.

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

Assume that a travel lane is 12 ft, what is the length of the merging taper and how many cones does it take?

<p>125 and 6 ODOT 125 and 8; 320 and 9 ODOT 320 and 17; 600 and 13 ODOT 600 and 16</p> Signup and view all the answers

Study Notes

Flagging Test Key Facts

  • Minimum and maximum lengths of the two-way flagger taper: 50 ft to 100 ft
  • Cones in the two-way taper are spaced 20 ft apart
  • Minimum number of cones for a 60 ft taper: 4
  • At 55 mph, the flagger should be positioned 335 ft from the work space
  • Minimum visibility distance for the first approaching vehicle at 55 mph: 495 ft
  • Minimum distance between the flagger and the flagger sign at 55 mph: 500 ft
  • Minimum distance between the flagger and flagger sign at 40 mph: 350 ft

Taper Specifications

  • The flagger's escape route should be angled at 90 degrees to approaching traffic
  • Recommended distance between each warning sign at 55 mph: 500 ft
  • Minimum and maximum lengths of downstream taper: 50 ft to 100 ft
  • Cones in a downstream taper are spaced 20 ft apart, with 6 cones in a 100 ft taper

Activity Area and Cone Requirements

  • At 55 mph, maximum distance between cones in the activity area: 110 ft (ODOT: 40 ft)
  • Minimum cone size for night work, high-speed roads, and all long-term projects: 28 inches
  • Minimum sign size: 36x36 inches (ODOT: 48x48 inches)

Sign Placement and Visibility

  • "Be prepared to stop" signs are placed after the merging taper
  • The flagger should be positioned in the closed lane
  • For 40 mph, the distance between transition sign and merging taper: 350 ft
  • Merging taper length at 40 mph with a 12 ft lane: 320 ft

Merging Taper Specifications

  • At 50 mph, the merging taper has 13 cones (ODOT: 16 cones)
  • Maximum distance between cones in the merging taper at 50 mph: 50 ft (ODOT: 40 ft)
  • Maximum distance between cones along the side of the activity area at 50 mph: 100 ft (ODOT: 40 ft)

Warning Sign and Buffer Distance

  • At 40 mph, distance between warning signs: 350 ft
  • Length of buffer space at 40 mph: 150 ft
  • Flags must be removed when the sign message is not visible

Portable Sign Specifications

  • All portable warning signs should have two 16x16 inch red-orange flags
  • Minimum distance between the bottom of the portable sign and the traveled way: 1 ft
  • When "be prepared to stop" and flagger signs are not needed, they should be turned or removed

Traffic Control Protocols

  • Flaggers are prohibited from directing traffic contrary to signals and signs
  • When flagging an intersection, signals should be turned off and covered
  • For night flagging, light equipment should be placed at a 15-degree angle to the flagger
  • Advance flaggers use a stop/slow paddle, not a flag
  • True statements: Advance flagger is preceded by a full set of 3 signs, flaggers must be preceded by at least 3 signs

Flagging Technique and Positioning

  • While stopping vehicles, the flagger should be on the shoulder
  • After stopping 4-5 vehicles, the flagger may stand near the center line
  • The flagger needs to master only 3 signals
  • To stop traffic: maintain eye contact, raise the free hand, and do not turn away from traffic
  • To release traffic: stand sideways on the shoulder, use the left hand to motion traffic, and hold the paddle in the right hand

Traffic Control Zone Components

  • Components of the traffic control zone include the activity area
  • True statement: Traffic control systems should provide positive guidance to road users

Merging Taper Lengths for Different Speeds

  • For 25 mph: Merging taper length is 125 ft with 6 cones
  • For 40 mph: Merging taper length is 320 ft with 9 cones
  • For 50 mph: Merging taper length is 600 ft with 13 cones (ODOT: 16 cones)

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Description

This quiz focuses on key concepts related to Work Zone Traffic Control (WZTC) and proper flagging techniques. It includes essential regulations such as taper lengths, cone spacing, and safety distances for flaggers. Test your knowledge and ensure safety in work zones!

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