Important notice to owners of commercial motor vehicles
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Suspension Systems. Suspension systems have a manufacturers weight capacity rating. Coupling Device Capacity.
the gross vehicle
power unit and the towed units
or any combination thereof
, that produces the highest value.
(The underlined and
italicized text above is for
use by roadside
enforcement only to determine
whether the driver/vehicle
is subject to CDL
is not used to determine
whether a vehicle
is representative for the
purposes of Skills testing.
The weight transmitted to the ground by one axle or one set of axles.
The maximum safe weight a tire can carry at a specified pressure. This rating is stated on the side of each tire.
Suspension systems have a manufacturer's weight capacity rating.
Coupling Device Capacity.
Coupling devices are rated for the maximum weight they can pull and/or carry.
Table of contents
Who needs a commercial driver license?
Commercial learner permit (clp)
Farm-related service industry (frsi) waiver
Commercial driver license (cdl)
Texas drivers applying fora
Others applying fora commercial driver license
Are the tests difficult?
Section 1 introduction
Figure 1.1 note:
School bust test
What sections should you study?
Section 1 - introduction
The irp registrant and the ifta licensee may
Figure 1 – individual vehicle mileage & fuel record (example)
Section 2 – driving safely
Figure 2.1suspension system defects.
Exhaust system defects.
Approaching the vehicle.
Step 2: check engine compartment
Page 2-3 version: july 2013
Look at the gauges
Check condition of controls.
Left front side
Step 6: check signal lights
Step 7: start the engine and check
Test service brake stopping action
Knowing when to shift up.
Basic procedures for shifting down
Before starting down a hill.
Subsections 2.2 and 2.3
Importance of looking far enough ahead.
Look for traffic.
Check your vehicle.
Stopping on the road
Don't direct traffic.
When it's hard to see.
The effect of vehicle weight on stopping
Just after rain begins
Figure 2.12 2.7.2 – space behind
Page 2-16 version: july 2013
Staying centered in a lane.
Seeing hazards lets you be prepared.
Learning to see hazards.
Off ramps/on ramps.
Delivery trucks can present a hazard.
Pedestrians and bicyclists can also be
Drivers in a hurry.
Driver body movement as a clue.
Subsections 2.7 and 2.8
Subsections 2.9 and 2.10
Fatigue and lack of alertness.
Warning signs of fatigue
Maintaining alertness while driving
Avoid blinding others.
Use high beams when you can.
Wipers and washers.
Lights and reflectors.
Radiator shutters and winterfront.
Adjust space to conditions.
Go slowly enough to prevent overheating.
Advance warning signs.
Don't rely on signals.
Subsections 2.15 and 2.16
Keep both hands on the steering wheel.
Where to steer.
Leaving the road.
Returning to the road.
Find an escape route.
Respond to tire failure.
Check the tires.
Abs won’t allow you to drive faster
Abs won’t change the way you normally
Follow safe procedures.
Pull off the road.
Extinguish the fire.
Class/type of fires
Figure 2.21 section 2 – driving safely
How alcohol works.
How alcohol affects driving.
What is a drink
Effects of increasing
To communicate the risk.
Figure 2.24 2.23.3 – lists of regulated products
Subsections 2.22 and 2.23
Figure 3.2 section 3 - transporting cargo safely
Section 3 test your knowledge
Section 3 - transporting cargo safely
Figure 4.1 4.2.2 – forbidden hazardous materials
Section 4 - transporting passengers safely
The most common bus accidents.
Stop at drawbridges.
Section 4 test your knowledge
Figure 5.1 section 5 – air brakes
Figure 5.2 wedge brakes.
Modulating control valves.
Figure 5.3 5.1.16 – antilock braking systems (abs)
Section 5 – air brakes
Check brake drums
Test low pressure warning signal.
Check rate of air pressure buildup.
Test air leakage rate.
Check air compressor governor cut-in and
Test parking brake.
Section 6 - combination vehicles
Figure 6.3 figure 6.4
Figure 6.6 section 6 - combination vehicles
Figure 6.7 6.3.2 – braking with abs
Step 5. secure tractor
Step 8. supply air to trailer
Step 9. lock trailer brakes
Step 12. secure vehicle
Step 14. connect the electrical cord and check
Step 16. remove trailer wheel chocks
Step 3. chock trailer wheels
Step 5. disconnect airlines and electrical
Test tractor protection valve.
Test trailer emergency brakes.
Section 7 - doubles and triples
Connect converter dolly to front trailer
Uncouple rear trailer
Uncouple triple-trailer rig
Coupling system areas
Double and triple trailers
Section 7 test your knowledge
Figure 8.1 8.2.1 – high center of gravity
Section 8 - tank vehicles
Section 9 - hazardous material
Transportation—who does what
Hazardous materials class
Examples of hazmat placards
The hazardous materials table.
Appendix b to 49 cfr 172.101 – list of marine
Placard table 2
Figure 9.8 section 9 - hazardous material
Subsections 9.1, 9.2, and 9.3
Use closed cargo space.
Class 4 (flammable solids) and class 5
Class 8 (corrosive) materials.
Class 2 (compressed gases) including
Class 7 (radioactive) materials.
Do not load table
Figure 9.9 mixed loads.
Emergencies 9.7.1 – emergency response guidebook
Page 9-15 version: july 2013
Class 1 (explosives).
Class 7 (radioactive materials).
National response center
Figure 9.10 classes of hazardous materials
Figure 9.11 subsections 9.6 and 9.7
Division – a subdivision of a hazard class. epa
Gross weight or gross mass
Outage or ullage
Proper shipping name
Section 10 – school buses
Additional procedures for students that must
Dropped or forgotten objects.
Determine need to evacuate bus.
Figure 10.7 flashing red light signals.
Approaching the crossing
Crossing the track
Police officer at the crossing.
Containment or storage areas.
Power steering fluid
Oil pressure gauge
Lights/reflectors/reflector tape condition
Horn check that air horn and/or electric horn work. heater/defroster
Section 11 - vehicle inspection
Hub oil seals/axle seals
Hitch release lever
Locking pins (fifth wheel)
Tongue storage area
Remainder of vehicle
Outside vehicle observations (looks)
Figure 12.2: offset back/right
Section 13 – on-road driving
Two way roadway
Lighting and reflectors.
Implements of husbandry.
Dard vehicle size requirements
School buses, recreational vehicles, and others
Test your knowledge
Texas commercial driver license
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