CNG Fleet Management and Driver Operations Flashcards
6 cards from real CNG practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 CNG Fleet Management and Driver Operations flashcards as text
When planning routes for a CNG fleet, a manager must account for which infrastructure limitation not typically faced by gasoline fleets?
Answer: Limited availability of public CNG fueling stations compared to gasoline stations
Public CNG fueling infrastructure is far less dense than gasoline retail, so fleet route planning must account for fueling station locations and vehicle range.
Which document must a fleet keep on file for each CNG cylinder installed in a vehicle to verify its service life status?
Answer: The cylinder manufacturer's certification and inspection records showing the expiration date
Cylinder manufacturer certifications and inspection records establish the cylinder's rated service life and must be maintained to ensure out-of-service cylinders are not used.
A driver reports that the CNG dispenser nozzle would not lock onto the vehicle's fill receptacle. What is the safest correct action?
Answer: Do not force the connection; report the incompatible equipment to maintenance and use an alternative dispenser
Forcing a mismatched CNG nozzle-receptacle connection risks high-pressure gas release; the driver should report the issue and use a compatible dispenser.
Under FMCSA regulations, which placard is required on a commercial vehicle transporting CNG cylinders as cargo?
Answer: COMPRESSED GAS placard (Division 2.1 Flammable Gas)
Natural gas is classified as a Division 2.1 flammable gas under DOT/FMCSA regulations, requiring the FLAMMABLE GAS or COMPRESSED GAS placard when transported.
A CNG fleet manager wants to ensure drivers know the maximum allowable working pressure (MAWP) of the vehicle's fuel system. Where is this information primarily found?
Answer: On the cylinder label and in the vehicle manufacturer's CNG system documentation
MAWP is stamped on the cylinder label and specified in the OEM's CNG system documentation, giving drivers and technicians the pressure rating of the system.
Which best practice should a CNG fleet manager implement to reduce the risk of overfilling CNG cylinders at a fleet fueling station?
Answer: Ensure dispensers are calibrated and equipped with automatic shutoff at the rated fill pressure
Properly calibrated dispensers with automatic pressure shutoffs prevent overfilling by stopping fuel delivery when the rated cylinder pressure is reached.