TRSCP Vehicle Recovery Techniques 2 — Questions and Answers
Question 1: Which recovery technique involves using the momentum of the recovery vehicle to free a stuck vehicle without a winch?
- Straight-line towing
- Kinetic energy recovery (snatch recovery) (Correct answer)
- Mechanical advantage pull
- Counterbalance extraction
Correct answer: Kinetic energy recovery (snatch recovery)
Kinetic energy recovery uses a stretchy snatch strap that stores energy as the recovery vehicle accelerates, then releases it to jerk the stuck vehicle free without requiring a winch.
Question 2: When using a recovery strap in a kinetic snatch recovery, the strap should have how much slack before the recovery vehicle begins moving?
- No slack — kept fully taut
- Approximately 2–3 feet of slack (Correct answer)
- Half the strap length in slack
- The strap should be coiled on the ground
Correct answer: Approximately 2–3 feet of slack
About 2–3 feet of slack allows the recovery vehicle to build momentum before the strap becomes taut, which is what creates the kinetic 'snatch' force needed to free the stuck vehicle.
Question 3: A vehicle has overturned on a steep hillside. Which direction should it be uprighted to minimize rollback risk?
- Uphill, so gravity assists in final placement (Correct answer)
- Downhill, which is always the safest direction
- Across the slope so it lands on flat ground
- The direction that requires the least winch cable
Correct answer: Uphill, so gravity assists in final placement
Uprighting a vehicle toward the uphill side positions it against the slope upon landing, reducing the chance of it rolling away or continuing down the hill after being righted.
Question 4: What is the purpose of placing a dampener (blanket or bag) on a winch cable during a recovery pull?
- To protect the cable from UV damage
- To reduce cable noise during operation
- To slow the snap-back of a broken cable and prevent injury (Correct answer)
- To mark the midpoint of the cable
Correct answer: To slow the snap-back of a broken cable and prevent injury
A dampener draped over a tensioned cable absorbs kinetic energy if the cable snaps, reducing the distance and force of the whiplash that could otherwise cause serious injury or death.
Question 5: When recovering a tractor-trailer that has jack-knifed, the operator should prioritize:
- Recovering the trailer first, then the tractor
- Recovering the tractor first to restore steering control
- Separating the units before any recovery begins (Correct answer)
- Using a single large wrecker to move both units together
Correct answer: Separating the units before any recovery begins
Separating the tractor from the trailer before recovery prevents the articulation joint from transmitting uneven forces and allows each unit to be recovered safely with appropriate equipment.
Question 6: The term 'resistance to extraction' in vehicle recovery refers to:
- The legal process of recovering abandoned vehicles
- The combined forces (suction, weight, obstacles) opposing vehicle movement (Correct answer)
- The friction between the winch cable and the drum
- A vehicle owner who refuses to allow recovery
Correct answer: The combined forces (suction, weight, obstacles) opposing vehicle movement
Resistance to extraction is the total opposing force, including ground suction, vehicle weight on soft terrain, and any obstacles, that the recovery equipment must overcome to free the stuck vehicle.
Question 7: During an off-road vehicle recovery, you notice the winch cable has a visible kink (birdcage). You should:
- Continue the recovery — kinks do not affect breaking strength
- Stop and remove the damaged section or replace the cable before continuing (Correct answer)
- Re-spool the cable faster to straighten the kink under tension
- Wrap the kinked section with duct tape to reinforce it
Correct answer: Stop and remove the damaged section or replace the cable before continuing
A kinked or birdcaged cable has severely reduced breaking strength at the damaged point and must be removed or replaced to prevent catastrophic cable failure under load.
TRSCP Vehicle Recovery Techniques 2
Which recovery technique involves using the momentum of the recovery vehicle to free a stuck vehicle without a winch?