NETTCP Transportation Safety & Inspection 5 — Questions and Answers
Question 1: 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?
- Place a cone near the front of the bus during stops as a substitute
- Continue service and repair at the next scheduled maintenance
- Remove the bus from service — crossing arm failure is a critical safety defect (Correct answer)
- Instruct the driver to escort children manually until repaired
Correct 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.
Question 2: 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?
- No action — inner tube is intact so the line is functional
- Advisory — monitor for further wear
- Defect requiring repair — chafed air lines must be replaced before the outer jacket failure leads to inner tube failure (Correct answer)
- Apply a temporary repair clamp and schedule service within a week
Correct 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.
Question 3: Which document must be on board a commercial vehicle transporting hazardous materials during transit under federal regulations?
- Carrier's insurance certificate and USDOT number card
- Shipping papers identifying the hazmat, placed within driver's reach (Correct answer)
- State permit for hazmat transport signed by a state official
- Shipper's invoice showing the value of the cargo
Correct 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.
Question 4: 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?
- Advisory — perpendicular cracks are less serious than longitudinal cracks
- Out of service — any frame crack is an immediate OOS condition (Correct answer)
- Defect — schedule repair within 10 days
- Monitor — apply paint to track crack growth over time
Correct 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.
Question 5: 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?
- 1 tiedown
- 2 tiedowns (Correct answer)
- 3 tiedowns
- 4 tiedowns
Correct 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.
Question 6: 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?
- 50 candela per lux per square meter (cd/lux/m²)
- 100 cd/lux/m² (Correct answer)
- 150 cd/lux/m²
- No minimum — any retroreflective material is acceptable
Correct 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.
Question 7: 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?
- Note it on the inspection report and pass the vehicle if all mechanical items are satisfactory
- Fail the inspection and notify the enforcement agency of potential odometer fraud (Correct answer)
- Refuse to complete the inspection and return the vehicle to the owner
- Document the observation but take no further action as odometer laws apply only to sales
Correct 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.
NETTCP Transportation Safety & Inspection 5
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?