MOT Incident Management & Response 3 ā Questions and Answers
Question 1: During a work zone incident, which color vest should a traffic control supervisor wear to be easily identifiable by emergency responders?
- Orange
- Yellow-green (Correct answer)
- Red
- Blue
Correct answer: Yellow-green
ANSI/ISEA 107 Class 3 high-visibility vests in fluorescent yellow-green provide the highest daytime and low-light visibility for supervisory personnel.
Question 2: An emergency vehicle needs to pass through an active work zone. The MOT crew should:
- Stop all work but leave equipment in place
- Immediately clear a path and direct emergency vehicles through safely (Correct answer)
- Wait for a supervisor's authorization before acting
- Redirect the emergency vehicle to an alternate route
Correct answer: Immediately clear a path and direct emergency vehicles through safely
MOT crews must immediately yield and create a clear path for emergency vehicles, as response time is critical.
Question 3: What is the recommended minimum length of the transition (taper) zone for a lane closure on a road with a 55 mph posted speed?
- 50 feet
- 300 feet
- 495 feet (Correct answer)
- 1,000 feet
Correct answer: 495 feet
MUTCD guidelines recommend a taper length formula (L = W Ć S for S ā¤ 45 mph; L = W Ć SĀ²/60 for S > 45 mph), yielding approximately 495 feet for 55 mph with a 12-foot lane width.
Question 4: A 'major incident' on a freeway is typically defined as one that causes a lane closure expected to last more than:
- 15 minutes
- 30 minutes (Correct answer)
- 60 minutes
- 2 hours
Correct answer: 30 minutes
Most traffic management centers define a major incident as any event expected to block one or more lanes for 30 minutes or longer.
Question 5: Which type of sign is posted first when approaching a work zone incident from the upstream direction?
- Road Work Ahead
- Flagger Ahead
- Incident Ahead (or Be Prepared to Stop) (Correct answer)
- Lane Closed Ahead
Correct answer: Incident Ahead (or Be Prepared to Stop)
'Be Prepared to Stop' or 'Incident Ahead' signage is placed farthest upstream to give motorists the earliest possible warning.
Question 6: When a lane is blocked by a disabled vehicle within a work zone, portable flashing arrow boards should be positioned to:
- Point toward the blocked lane to direct responders
- Indicate a merge away from the blockage in the upstream direction (Correct answer)
- Face oncoming traffic downstream of the incident
- Illuminate the crash vehicle from the rear
Correct answer: Indicate a merge away from the blockage in the upstream direction
Arrow boards in 'merge' or 'caution' mode upstream of the incident guide drivers to shift away from the blocked lane.
Question 7: What does the acronym 'NIMS' stand for in the context of incident management?
- National Incident Management System (Correct answer)
- Network Incident Monitoring Service
- National Interstate Maintenance Standard
- Non-Impact Merge Strategy
Correct answer: National Incident Management System
NIMS is the National Incident Management System, a standardized framework used across all levels of government for incident response and coordination.
MOT Incident Management & Response 3
During a work zone incident, which color vest should a traffic control supervisor wear to be easily identifiable by emergency responders?