CPST - Certified Child Passenger Safety Technician LATCH System Installation Questions and Answers

Question 1

A caregiver wants to install their forward-facing child restraint in the center rear seating position using the LATCH system. The vehicle manual indicates there are no dedicated lower anchors for the center seat, but allows for 'borrowing' the innermost lower anchors from the outboard seating positions. The distance between these anchors is 15 inches. What is the MOST critical next step for the CPST to take?

Accepted Answer

Check the child restraint manual to see if it permits installation with non-standard lower anchor spacing.

Answer

Standard LATCH lower anchor spacing is 11 inches (280 mm). When a vehicle allows 'borrowing' of anchors from outboard seats for a center installation, the spacing is often wider than this standard. It is crucial that BOTH the vehicle manufacturer AND the child restraint manufacturer permit this type of installation with non-standard spacing. Therefore, the most critical next step is to consult the child restraint manual for its specific guidelines on lower anchor spacing.

Question 2

Which of the following statements about the top tether is MOST accurate for a forward-facing child restraint installation?

Accepted Answer

The top tether should be used for all forward-facing installations, regardless of whether the seat is installed with the seat belt or lower anchors.

Answer

The top tether is a critical safety component that significantly reduces head excursion in a crash. It should always be used for a forward-facing child restraint, whether the installation method is the vehicle's seat belt or the LATCH system's lower anchors. Vehicle owner's manuals specify designated tether anchor points, and cargo hooks are not designed or tested for this purpose.

Question 3

A CPST is checking a rear-facing convertible car seat installed with LATCH. The seat moves less than 1 inch side-to-side when checked at the belt path. The lower anchor webbing is twisted, and the caregiver asks if this is a problem. What is the BEST response?

Accepted Answer

"Yes, twisted webbing can compromise the strength of the LATCH strap in a crash and should be corrected."

Answer

Twisted LATCH webbing is a common installation error. The webbing is designed to lie flat to properly distribute crash forces. A twist can concentrate forces on a smaller area, potentially weakening the strap and compromising its performance in a crash. The webbing should always be untwisted to ensure it is flat through the belt path and at the connector.

Question 4

What is the federal requirement for LATCH equipment in passenger vehicles manufactured after September 1, 2002?

Accepted Answer

LATCH systems (lower anchors and tether anchors) in at least two rear seating positions, and a tether anchor in at least one additional position.

Answer

Federal Motor Vehicle Safety Standard 225 requires that vehicles manufactured after September 1, 2002, must be equipped with LATCH systems (which include both lower anchors and a top tether anchor) in at least two rear seating positions. Additionally, they must have a top tether anchor in at least a third rear seating position.

Question 5

A caregiver has installed a forward-facing car seat using both the LATCH system's lower anchors and the vehicle's seat belt simultaneously, believing it makes the seat 'extra safe.' What should the CPST advise?

Accepted Answer

Using both systems at the same time is prohibited unless specifically allowed by both the vehicle and car seat manufacturers.

Answer

Car seats are crash-tested using either the LATCH system OR the vehicle's seat belt, but not both simultaneously. Using both systems together can put unintended stress on the child restraint's shell and the vehicle's anchor points. This practice is prohibited unless both the child restraint manufacturer AND the vehicle manufacturer explicitly state that it is permissible.

CPST - Certified Child Passenger Safety Technician Practice Test

CPST - Certified Child Passenger Safety Technician Practice Test

CPST - Certified Child Passenger Safety Technician LATCH System Installation Questions and Answers