EVOC EVOC Traffic Control & Intersection Navigation 2 — Questions and Answers
Question 1: The 'SOP 360' or 360-degree intersection scan technique requires the driver to check:
- All four quadrants of the intersection before and during traversal (Correct answer)
- Only the direct path of travel ahead
- Left, right, then ahead in a quick sweep
- Mirrors only, since forward vision covers the front
Correct answer: All four quadrants of the intersection before and during traversal
Threats can come from any direction at an intersection, so all four quadrants — including the rear for tailgaters — must be evaluated.
Question 2: When approaching a traffic signal-preemption-equipped intersection, the driver should:
- Still slow and confirm the signal has changed and conflicting traffic has stopped (Correct answer)
- Accelerate through at full speed since the signal is legally cleared
- Deactivate warning lights since the preemption system provides sufficient warning
- Honk twice and proceed without slowing
Correct answer: Still slow and confirm the signal has changed and conflicting traffic has stopped
Signal preemption changes the signal but cannot guarantee all drivers see or obey it, so the driver must visually confirm the intersection is clear.
Question 3: What is the safest lane position when approaching an intersection with an emergency vehicle?
- The lane farthest left, to maximize visibility and create a buffer on the right (Correct answer)
- The far right lane to allow other vehicles to move left
- The center lane at all times regardless of conditions
- Lane position does not matter when warning lights are active
Correct answer: The lane farthest left, to maximize visibility and create a buffer on the right
Taking the leftmost lane puts the driver in the best position to see around vehicles, reduces blind spots, and leaves a buffer from right-side threats.
Question 4: When using an aerial device or ladder truck at a signalized intersection, the driver must additionally account for:
- Overhead clearance for the aerial device and utility wires (Correct answer)
- Increased brake sensitivity due to turntable weight
- Reduced radio signal strength near traffic signals
- Wider turning radius only — no additional hazards apply
Correct answer: Overhead clearance for the aerial device and utility wires
Taller apparatus can strike overhead utilities, traffic signal arms, and overpasses at intersections, making vertical clearance a critical check.
Question 5: Which statement about traffic cones placed around an emergency scene on a roadway is correct?
- Cones should begin upstream of the scene with a gradual taper to guide traffic into an open lane (Correct answer)
- Cones should be placed in a straight line perpendicular to traffic flow
- Cones are only required during nighttime operations
- Cones should be placed as close to the work area as possible without a taper
Correct answer: Cones should begin upstream of the scene with a gradual taper to guide traffic into an open lane
A tapered cone layout upstream allows approaching drivers time to merge smoothly, reducing the risk of a sudden swerve near workers.
Question 6: At a multi-lane intersection, which secondary hazard does EVOC training specifically warn about after the first lane of traffic stops?
- Vehicles in adjacent lanes may still be moving and not see the stopped traffic or the emergency vehicle (Correct answer)
- The first lane of traffic may roll backward
- Emergency vehicle tires lose traction on intersection paint markings
- Radio communications are blocked by stopped vehicles
Correct answer: Vehicles in adjacent lanes may still be moving and not see the stopped traffic or the emergency vehicle
The 'shadow' created by stopped vehicles in one lane can hide the emergency vehicle from drivers in adjacent lanes who have not yet stopped.
EVOC EVOC Traffic Control & Intersection Navigation 2
The 'SOP 360' or 360-degree intersection scan technique requires the driver to check: