MOT Temporary Traffic Control Plans 5

Question 1

A field inspector notices that deployed TTC devices have been knocked over and not replaced during active work. What is the correct action?

Accepted Answer

Immediately notify the contractor to restore devices and halt work if safety is compromised

Answer

The contractor must immediately restore missing TTC devices; inspectors have authority to halt work when worker or public safety is at risk.

Question 2

In a TTC plan, 'shadow vehicles' equipped with truck-mounted attenuators (TMAs) are positioned primarily to protect against which hazard?

Accepted Answer

Errant vehicles intruding into the work zone and striking workers

Answer

TMAs on shadow vehicles absorb impact energy from errant vehicles, protecting workers in the activity area from being struck.

Question 3

A TTC plan calls for closing an exit ramp to highway traffic. Which signing is MOST critical to install well in advance of the closure point?

Accepted Answer

Advance notification of next available exit with appropriate distance signs

Answer

Drivers must be advised of the closed exit and directed to the next available exit far enough in advance to safely change their route.

Question 4

According to the MUTCD, which color are temporary traffic control signs (other than those with regulatory messages) required to be?

Accepted Answer

Orange background with black legend

Answer

Temporary work zone warning signs use an orange background with black legend to distinguish them as work zone conditions.

Question 5

A TTC plan specifies the use of Type III barricades. In which part of the work zone are Type III barricades most commonly deployed?

Accepted Answer

At the beginning of lane closures, road closures, and at detour turnoffs

Answer

Type III barricades are used at the start of road or lane closures and at detour points to mark the closure and guide traffic.

(MOT) Maintenance of Traffic Certification Practice Test