CA Flagger Setup and Closure 4

Question 1

A work zone is being set up near a curve where sight distance is limited. How should the advance warning signs be adjusted?

Accepted Answer

Move advance warning signs farther upstream to compensate for reduced sight distance

Answer

When sight distance is limited by curves or hills, advance warning signs must be placed farther upstream to give drivers adequate reaction time.

Question 2

During the setup of a nighttime lane closure, which additional measure is required beyond standard daytime requirements in California?

Accepted Answer

All channelizing devices must have retroreflective sheeting or lights

Answer

At night, all channelizing devices must be retroreflective or have lights attached so drivers can see the work zone boundary.

Question 3

When does a flagger's responsibility for the setup area officially end at the conclusion of a work day?

Accepted Answer

After all traffic control devices have been properly removed or secured for overnight use

Answer

The flagger's area responsibility ends when all devices are properly removed or secured, ensuring the roadway is safe for overnight traffic.

Question 4

On a multilane highway, a flagger is helping set up a right-lane closure. Where should the first cone of the taper be placed?

Accepted Answer

At the point where the closed lane begins to narrow, farthest upstream in the taper

Answer

The first cone of the taper is placed at the upstream point where vehicles begin to be channelized laterally, farthest from the work space.

Question 5

What is the primary hazard during the takedown of a temporary traffic control zone compared to setup?

Accepted Answer

Devices must be removed while traffic is moving at full speed through the now-open area

Answer

During takedown, as devices are removed, traffic begins accelerating back to full speed, increasing the risk to workers still in the area.

(CA Flagger) California Flagger Exam Practice Test