CNG CNG Fleet Management and Driver Operations 2

Question 1

A fleet manager scheduling preventive maintenance for CNG vehicles should ensure cylinders are re-inspected at which interval per NFPA 52?

Accepted Answer

Every 3 years or per the cylinder manufacturer's specification, whichever comes first

Answer

Every 10 years regardless of condition

Answer

Only when visible damage is observed

Answer

At every oil change interval

Question 2

When a CNG fleet vehicle is involved in a collision, what is the fleet manager's first safety priority regarding the fuel system?

Accepted Answer

Close the manual shutoff valve and keep ignition sources away from the vehicle

Answer

Immediately restart the vehicle to check for warning lights

Answer

Drain the cylinders by running the engine until empty

Answer

Call the OEM before taking any action

Question 3

Which training requirement is mandated for employees who fuel CNG vehicles at a fleet's private fueling station under OSHA standards?

Accepted Answer

Hazard Communication (HazCom) training on compressed gas hazards and emergency procedures

Answer

CDL Class B licensing

Answer

NFPA 1 Fire Inspector certification

Answer

EPA-certified fuel economy testing

Question 4

A fleet data system shows a CNG vehicle's average fuel consumption increased by 15% with no change in route. What is the most likely cause to investigate?

Accepted Answer

A fuel system leak causing unaccounted gas loss

Answer

Improved driver behavior reducing idle time

Answer

A faulty odometer reporting shorter distances

Answer

Decreased fuel prices reducing cost tracking accuracy

Question 5

For a fleet operating CNG vehicles in cold climates, which operational challenge must managers plan for during winter months?

Accepted Answer

Reduced fueling efficiency due to temperature-related pressure variations affecting fill levels

Answer

CNG cylinders freezing solid and becoming inoperable

Answer

Natural gas turning to liquid inside the cylinders

Answer

Increased NOx emissions in warm weather only

Question 6

What telematics data point is most important for a CNG fleet manager to monitor in real time for safety compliance?

Accepted Answer

Fuel system pressure readings and any low-pressure fault codes

Answer

Engine RPM during highway cruising

Answer

Cabin temperature settings

Answer

Infotainment system usage logs