UniDrive Test

When should the completed inspection report be available for peace officers?

Within 48 hours of asking for it
Within 7 days of asking for it
Within 12 hours of asking for it
As soon as they ask for it

What is a minor defect with the air brake system?

Audible air leaks and slow air pressure build-up
Low air pressure in the secondary tank
Low air pressure in the primary tank
None of the above

To check the automatic feature of the trailer air supply valve, which statement is false?

Push the trailer supply valve
Turn the key to the run position
The park control valve should be in
Ensure the engine is turned off

What does the driver need to do differently with a vehicle equipped with the Stability Control System?

Nothing
Learn to have a greater feel of the accelerator
Learn to listen to sounds coming from the vehicle
Learn to have a greater feel of the brake pedal

What does the Stability Control System correct?

Tire inflation
Unusual vehicle behaviour of the steering, brakes, rollover and jackknife
None of the above
None of the above

Which is not an air brake major defect?

Air pressure loss rate exceeds the proscribed limit
Low air pressure warning system fails or activates
Low air pressure warning system fails or activates Tractor protection system malfunction in towing vehicles
Checking the park brake and it operates

When should the commercial vehicle inspection report be submitted to the carrier?

Within 24 hours
Within 20 days
Within 14 days
Within 7 days

When descending a steep hill, your brakes must be inspected...

When a white sign is located
When a green sign is located
When directed to by fellow drivers
When a yellow sign is located

When must drivers incorporate the air brake pre-trip inspections?

Every two hours
Every 48 hours
During the daily pre-trip inspection
Separately from other inspections

What is not an in-service brake check?

Check air pressure gauges
Check dash to see if the low air pressure warning indicator is on
Listening for any sounds during brake application
Be aware of brake system response when brakes are applied

During an en-route air brake inspection during the shift, which statement is false?

Pull the supply tank drain lanyard to check for any moisture
Confirm the ABS system is working
Confirm that the foundation brakes are not overheating
Check that the trailer air line couplers are still firmly connected and suspended

Which statement is false? Why conduct a post-trip air brake inspection?

Open the drain valves on the tanks to allow the tanks to drain
Confirm the foundation brakes have overheated
Ensure the foundation brakes have maintained adjustments
Confirm the foundation brakes have not overheated

During a vehicle inspection, can a vehicle be driven if it has a minor defect?

It must be placed out-of-service
Can be driven to the maintenance yard
No it can't
Yes it can

To check the automatic feature of the park control valve, which statement is false?

Pump the foot valve to reduce air pressure
Pull out the park control valve
Push in the park control valve
Park control valve should pop out by 20-45 psi

During the Tractor Protection System, low air pressure warning should turn on by what psi?

40 psi
50 psi
30 psi
60 psi

Which system does the Stability Control System replace?

Nothing
The Automatic Traction Control System
The air brake system
The Antilock Brake System

While regulations govern the legislative requirements for vehicle inspections, how often do industry best practices require vehicles to be inspected?

Roadside inspections
Just the pre-trip inspection
The pre-trip and the post trip inspections
Often throughout the shift

During the Tractor Protection System, the trailer air supply valve should pop out at what psi?

80-100 psi
70-90 psi
20-30 psi
60-80 psi

The ATC has a dashboard light that illuminates at certain times? What does it mean if it flashes?

The ATC is only partially working
It's a self-test
There is a problem with the ATC system
The ATC system is activated

Which statement is false? The purpose of the Commercial Vehicle Safety Regulation of the Traffic Safety Act is...

Provides minimum standards for trip inspections
T
Reduces the chance of a collision caused by mechanical failure
Ensures the air brake system is in a safe operating condition

During the pre-hill brake inspection, which statement is false?

Check the air system for leaks
Ensure the compressor has some air and is not dropping too much
Check brake temperature
Check the security of trailer air lines

Which is tested with the engine running?

Air system leaks
Tractor protection system
Park Control Valve
The supply circuit

During the pre-hill inspection, what must be checked as a minimum brake inspection?

Air brake leaks
Brake lights on the trailer
Gauges
Hydraulic brakes

When performing the air brake inspection during the daily inspection, when should the trailer be inspected?

After the trailer is driven one vehicle length
Before the trailer is coupled to the tractor
None of the above
After coupling and the trailer is charged

Which systems are more advanced?

Anti-lock Brake Systems
Automatic Traction Control Systems
They are all equal
Stability Control Systems

If a wheel spin is detected by the ATC system, what happens?

It slows down all the wheels on that side of the vehicle
It applies the wheels brake, slowing the wheel spin
It locks the spinning wheel
It slows down that wheel and the pairing wheel

Ideally, when should the en-route inspections be done?

Every few days
At the end of the trip
Once a day
Every few hours

When is the air system checked for leaks during the pre-trip inspection?

Before starting the ignition
After one application on the brake pedal
After hearing the air dissipating in a line
The air tanks start full, cycled down, then back up to check for leaks

If any new items were added to the vehicle after the daily inspection, what happens?

Just add it and move on
It should be ignored until the next daily report is done
It should be inspected and written down on the Trip Inspection Report prior to its use
Nothing

What does the procedure on the Air Brake Practical Test form serve as?

A checklist for the air brake system pre-trip inspection
A guide to study from
No real purpose
Can be used while writing the test

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