Transportation Safety & Inspection Flashcards

During a school bus inspection, a technician finds the crossing control arm (stop arm side) fails to deploy when the stop arm is activated. What is the required action?

Answer: Remove the bus from service — crossing arm failure is a critical safety defect

A non-functional crossing control arm is a critical safety defect on a school bus that requires immediate removal from service to protect students.

A transportation technician inspects a vehicle and finds one air line has chafing wear that has worn through the outer jacket but the inner tube appears intact. How should this be documented?

Answer: Defect requiring repair — chafed air lines must be replaced before the outer jacket failure leads to inner tube failure

Air lines with chafing through the outer jacket are defects requiring repair because the compromised line can fail suddenly, causing brake failure.

Which document must be on board a commercial vehicle transporting hazardous materials during transit under federal regulations?

Answer: Shipping papers identifying the hazmat, placed within driver's reach

Shipping papers identifying the hazardous material, quantity, and proper shipping name must be within reach of the driver or in a door pocket during transit.

A NETTCP technician is inspecting frame rails on a commercial vehicle and finds a crack running perpendicular to the frame rail length. How should this defect be classified?

Answer: Out of service — any frame crack is an immediate OOS condition

Any crack in a frame rail is an FMCSA out-of-service condition because frame integrity is fundamental to vehicle structural safety.

Under FMCSA regulations, what is the minimum number of tiedowns required to secure an article of cargo that is 10 feet long and weighs 1,200 lbs?

Answer: 2 tiedowns

Articles under 1,100 lbs or shorter than 5 feet require 1 tiedown, but articles between 5-10 feet long require a minimum of 2 tiedowns regardless of weight.

A technician observes that a commercial vehicle's reflective tape on the trailer is faded and reflects poorly at night. Under federal standards, what is the minimum retroreflectivity requirement for conspicuity tape?

Answer: 100 cd/lux/m²

Federal Motor Vehicle Safety Standard 108 requires trailer conspicuity tape to have a minimum retroreflectivity of 100 cd/lux/m² to ensure nighttime visibility.

During an annual vehicle inspection, a technician finds the odometer has been tampered with on a commercial vehicle. Under federal law, what is the technician's obligation?

Answer: Fail the inspection and notify the enforcement agency of potential odometer fraud

Odometer tampering is a federal violation under the Federal Odometer Act, and a technician who discovers it is obligated to fail the inspection and report it to the appropriate enforcement authority.