CPST - Certified Child Passenger Safety Technician Vehicle Systems and Airbags Questions and Answers — Questions and Answers
Question 1: A caregiver is installing a high-back booster seat for their 8-year-old child in an outboard seating position equipped with side curtain airbags. They are concerned about the airbag's proximity to their child. What is the MOST accurate guidance a CPST should provide?
- Side curtain airbags are generally safe with boosters, but ensure the child sits upright and does not lean against the door or window. (Correct answer)
- The side curtain airbag must be deactivated by a dealer before a child can sit in that position.
- Only backless boosters are permitted in seating positions with side curtain airbags.
- The booster seat must be installed using the LATCH system to prevent interaction with the side airbag.
Correct answer: Side curtain airbags are generally safe with boosters, but ensure the child sits upright and does not lean against the door or window.
Vehicle and child restraint manufacturers have found that side curtain airbags do not typically pose a risk to properly restrained children in car seats or boosters. The primary concern is ensuring the child is not out of position (e.g., leaning against the door/window) where the airbag deploys, as this could cause injury. A high-back booster can help keep a sleeping child properly positioned.
Question 2: Which of the following is the primary safety function of an adjustable or fixed head restraint found on a vehicle seat?
- To provide comfort for the occupant during long trips.
- To serve as an anchor point for a child restraint's top tether.
- To protect an occupant from whiplash-type neck injuries in a crash. (Correct answer)
- To automatically move forward in a crash to cushion the head.
Correct answer: To protect an occupant from whiplash-type neck injuries in a crash.
The primary purpose of a vehicle's head restraint (often called a headrest) is to limit the rearward movement of an occupant's head during a rear-end collision, thereby reducing the risk of whiplash and other neck injuries. While it can add comfort, its main function is safety.
Question 3: A caregiver driving a 2018 Ford Explorer asks about installing their child's forward-facing car seat. The CPST identifies that the vehicle is equipped with inflatable seat belts in the rear outboard seats. What is the critical next step?
- Use a locking clip because inflatable belts cannot be locked for installation.
- Inform the caregiver that these belts are safer and no special steps are needed.
- Install the car seat using the LATCH system instead of the seat belt, if possible.
- Consult both the vehicle owner's manual and the car seat manual for specific instructions regarding inflatable belts. (Correct answer)
Correct answer: Consult both the vehicle owner's manual and the car seat manual for specific instructions regarding inflatable belts.
Inflatable seat belts are not compatible with all child restraints. Using them for installation requires specific instructions or may be prohibited altogether. It is mandatory to check both the vehicle manual and the child restraint manual for compatibility and specific routing or hardware requirements before proceeding. Simply switching to LATCH is a possible solution, but the first action is to read the manuals to understand all options and prohibitions.
Question 4: Under which of the following circumstances is it permissible and appropriate to have a passenger frontal airbag turned off with an ON/OFF switch?
- When an adult passenger is shorter than 5 feet tall.
- When transporting a forward-facing child who is under the LATCH weight limit.
- When a rear-facing infant seat must be placed in the front seat of a single-cab pickup truck. (Correct answer)
- For any child under the age of 13 who must ride in the front seat.
Correct answer: When a rear-facing infant seat must be placed in the front seat of a single-cab pickup truck.
NHTSA regulations only permit airbag ON/OFF switches in very specific situations where no back seat is available (e.g., single-cab trucks, sports cars) and a rear-facing infant seat must be placed in the front. It is never safe for a rear-facing seat to be in front of an active frontal airbag. Other exceptions exist for medical reasons but are less common.
Question 5: A caregiver in a newer minivan with advanced, weight-based frontal airbags asks if it's now safe for their 10-year-old child to ride in the front passenger seat. What is the best practice recommendation a CPST should give?
- Yes, as long as the vehicle seat is moved as far back as possible.
- No, all children under age 13 should ride in the back seat, regardless of airbag technology. (Correct answer)
- Yes, advanced airbags are designed to be safe for children over the age of 8.
- Only if the child weighs more than 80 pounds and can pass the 5-step test for belt fit.
Correct answer: No, all children under age 13 should ride in the back seat, regardless of airbag technology.
Despite advancements in airbag technology, the sensors and deployment levels are not foolproof. The safest place for any child under the age of 13 is in the back seat, away from the powerful force of a deploying frontal airbag. This is the consistent best practice recommendation from both NHTSA and the American Academy of Pediatrics.
Question 6: Which component of a vehicle's supplemental restraint system (SRS) is responsible for detecting the forces of a collision and signaling the airbag to deploy?
- The inflator module.
- The diagnostic monitoring unit.
- The crash sensors. (Correct answer)
- The seat belt retractor.
Correct answer: The crash sensors.
The airbag system relies on crash sensors, typically placed in the front of the vehicle, to detect a sudden deceleration or impact that meets the threshold for deployment. Once triggered, these sensors send an electrical signal to the inflator module, initiating the chemical reaction that inflates the airbag.
CPST - Certified Child Passenger Safety Technician Vehicle Systems and Airbags Questions and Answers
A caregiver is installing a high-back booster seat for their 8-year-old child in an outboard seating position equipped with side curtain airbags.
They are concerned about the airbag's proximity to their child.
What is the MOST accurate guidance a CPST should provide?