TRSCP Vehicle Recovery Techniques 1 — Questions and Answers
Question 1: When recovering a vehicle that has rolled onto its side, which technique is typically used first to stabilize it before uprighting?
- Immediately attach winch lines and pull
- Crib and block the vehicle to prevent further movement (Correct answer)
- Deflate the tires to lower the center of gravity
- Attach the recovery hook to the axle
Correct answer: Crib and block the vehicle to prevent further movement
Cribbing and blocking stabilizes the vehicle and prevents it from rolling or shifting unexpectedly during the recovery operation, protecting both the vehicle and recovery personnel.
Question 2: A 'go-devil' or snatch block is used in winching operations primarily to:
- Increase the mechanical advantage of the winch (Correct answer)
- Prevent cable snap-back
- Anchor the recovery vehicle
- Measure cable tension
Correct answer: Increase the mechanical advantage of the winch
A snatch block redirects the cable and doubles the pulling force, effectively increasing the winch's mechanical advantage and reducing the load on the winch motor.
Question 3: When extracting a vehicle from soft ground (mud or sand), the recovery operator should:
- Apply full winch power immediately to break the suction
- Use a slow, steady pull and place traction aids under the stuck vehicle's tires (Correct answer)
- Always use a snatch-strap at maximum speed for momentum
- Dig only around the front tires before winching
Correct answer: Use a slow, steady pull and place traction aids under the stuck vehicle's tires
A slow, steady pull combined with traction aids reduces the suction effect of soft ground and prevents cable overloading, making the extraction safer and more effective.
Question 4: What is the correct procedure for a 'dead-man' anchor when no natural anchor points are available?
- Attach the winch line to the recovery truck's front bumper
- Bury a recovery board, axle, or spare tire horizontally in the ground (Correct answer)
- Drive a stake into the ground and wrap the cable around it
- Use the vehicle's own frame as a self-anchor
Correct answer: Bury a recovery board, axle, or spare tire horizontally in the ground
A dead-man anchor is created by burying a solid object horizontally in the ground, distributing load across soil to create a reliable anchor point when trees or fixed structures are absent.
Question 5: During a winch recovery, the cable begins to jump off the drum and pile on one side. The operator should:
- Continue the pull since cable piling is normal
- Stop immediately and re-spool the cable evenly before continuing (Correct answer)
- Increase winch speed to pull faster before more cable piles
- Tie a knot in the cable to hold it in place
Correct answer: Stop immediately and re-spool the cable evenly before continuing
Improperly spooled cable loses mechanical strength, increases the risk of kinking or snapping, and can damage the drum; re-spooling ensures safe, even tension across the drum.
Question 6: When recovering a vehicle from a ditch with a steep embankment, the recovery vehicle should be positioned:
- Directly in front of the stuck vehicle regardless of terrain
- At an angle no greater than 30 degrees off the pull line when possible (Correct answer)
- As close to the edge as possible for maximum cable length
- Perpendicular to the stuck vehicle for maximum leverage
Correct answer: At an angle no greater than 30 degrees off the pull line when possible
Keeping the pull angle within 30 degrees of straight maintains effective winch line tension and reduces side-load stress on the winch and recovery vehicle's frame.
Question 7: A vehicle is submerged in water up to its door sills. Before beginning winch extraction, the operator must first:
- Immediately attach all rigging and begin pulling
- Assess the depth, current, and structural integrity of the vehicle (Correct answer)
- Open the vehicle doors to equalize water pressure
- Deflate the tires so the vehicle sinks lower for better cable angles
Correct answer: Assess the depth, current, and structural integrity of the vehicle
Assessing water depth, current speed, and vehicle structural integrity determines safe attachment points and prevents pulling on a compromised frame that could collapse during recovery.
TRSCP Vehicle Recovery Techniques 1
When recovering a vehicle that has rolled onto its side, which technique is typically used first to stabilize it before uprighting?