Practice Test GeeksCPST - Certified Child Passenger Safety Technician Practice Test
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Harness Systems and Harness Fit Flashcards

7 cards from real CPST practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Harness Systems and Harness Fit flashcards as text

  1. The crotch buckle strap on a car seat should be adjusted to the slot closest to the child primarily to:

    Answer: Prevent the child from submarining under the harness in a crash

    Positioning the crotch strap in the closest slot keeps the harness snug across the hips and prevents forward slide (submarining) during a crash.

  2. Twisted harness webbing is a safety concern because it:

    Answer: Reduces webbing strength and can concentrate crash forces on a narrow band

    Twisted straps reduce effective webbing width and strength, concentrating crash loads and potentially cutting into the child instead of distributing force.

  3. What clothing is most appropriate for a child to wear in a car seat in cold weather?

    Answer: Thin layers with a blanket placed over the buckled harness

    Thin layers allow the harness to fit snugly; a blanket placed over the already-buckled harness adds warmth without creating dangerous slack.

  4. When a harness shoulder strap repeatedly slides off a child's shoulder, the most likely cause is:

    Answer: The harness slots are at the wrong height for the child

    Straps falling off the shoulder indicate the harness slot is set too high or the wrong slot is selected; adjusting to the correct slot height keeps straps on the shoulders.

  5. Why are aftermarket harness accessories (such as strap covers or added padding) generally not recommended by CPSTs?

    Answer: They have not been crash-tested with the specific seat and may alter harness performance

    Aftermarket products are not tested with specific car seats; they can change harness geometry and energy absorption in ways not approved by the manufacturer.

  6. During a harness check, a technician is unable to tighten the harness because the adjuster strap is frayed. What is the appropriate recommendation?

    Answer: Contact the manufacturer and potentially replace the seat

    A damaged harness adjuster is a mechanical safety defect; the family should contact the manufacturer and may need to replace the seat.

  7. What is the practical difference between a front-pull (no-rethread) harness adjuster and a rear-pull harness adjuster?

    Answer: Rear-pull adjusters require the child to be removed from the seat to retighten

    Rear-pull adjusters are routed behind the seat back, requiring the child to be lifted out each time the harness needs to be tightened or loosened.