ACC LEA 720 Phase 3 Final Exam Guide
2024 Latest/verified
What is the definition of Traffic Incident Management(TIM)? - CORRECT ANSWER-A
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planned and coordinated multi-disciplinary process to detect, respond to and clear traffic
incidents so that traffic flow may be restored as safely and quickly as possible.
What is Traffic Incident Management National Unified Goals? - CORRECT ANSWER
§Responder safety
§Safe, quick clearance
§Prompt, reliable, interoperable communications.
What are the four compenents of a Traffic Incident Management Area (TIMA). -
CORRECT ANSWER-• Advance Warning Area - Notifies upstream traffic of emergency situation ahead
• Transition Area - Traffic is "transitioned" away from Activity Area
• Activity Area - Buffer Space - Incident Space
• Termination Area - The area at the end of the Activity Area and where traffic can return to its normal flow.
Describe multiple traffic control devices that can be used to provide advanced warning. -
CORRECT ANSWER-• Emergency traffic control warning and guide signs should have: - Diamond shape - Black lettering and a black border - Fluorescent pink background
• PCMS can be used for intermediate incidents and are strongly recommended for use
during major incidents
• Tapers can be set up using cones or flares - skip lines provide a useful guide for
measuring distances
What is a taper in traffic control? - CORRECT ANSWER-The taper is the transition area
where a driver must adjust their travel path. Tapers are also used to transition traffic
back to its normal path of travel at the end of the area.
How should Tapers be used? - CORRECT ANSWER-• A taper should encompass as
much equipment as is available on the scene
• Consider roadway speed - the higher the speed the longer the taper
• Tapers should be set up to accommodate for sight obstacles
• Try to maximize the spacing covered with the cones available at that time
• Block as much of the roadway as needed and extend the taper out as far as possible
to allow drivers adequate time to merge
• Most high-speed highways in Wisconsin use a skip line distance of 50 feet from the
start of one line to the start of the next (or from the end of one to the end of the next)
What is the difference between upstream and downstream in vehicle crashes? -
CORRECT ANSWER-Upstream is going towards the accident, downstream is away.
What is the upstream buffer? - CORRECT ANSWER-A space after upstream taper and
before the incident area that gives extra protection to emergency responders.
What is the downstream buffer space? - CORRECT ANSWER-Area in termination
space that gives emergency personnel extra protection in incident area before the
downstream taper.
What is the blocking vehicle? - CORRECT ANSWER-An emergency vehicle in a taper
to block traffic from staying in lane.
What is the activity area and what is in it? - [Show Less]