CDL Class A · 3D practice
Pre-trip checks, air brakes and backing
Rehearse the inspection, work through brake checks and practice positioning a tractor-trailer.
Start practicing$49 / 30 days · One payment
Repeat the steps
What you practice
- Inspect the engine, cab, coupling and trailer.
- Work through air brake and service brake checks.
- Practice backing and review return-to-service decisions.
Inside the trade
Your lessons
Follow the guide, then put the steps into practice.
Engine compartment
Cab check & engine start
In-cab air brake check
Parking & service brake checks
Front lights & reflectors
Steering & front suspension
Steer axle brakes & wheels
Side of the tractor
Drive axles
Coupling system
Coupling & uncoupling decisions
Trailer front & side
Trailer axles & rear
How backing steering works
Straight line backing
Offset back / right
Alley dock (90°)
Parallel park (driver side)
Defect report & return to service
Before you start
Common questions
What will I practice in CDL Class A?
Rehearse the inspection, work through brake checks and practice positioning a tractor-trailer.
What does the pass cost?
The CDL Class A pass costs $49 USD for 30 days of access to this trade. It is one payment with no subscription or automatic renewal.
How do I start?
Choose Start practicing, sign in to Portfloor and buy the CDL Class A pass from the player. Return using the same account to open your practice.
Can I use a phone or a computer?
Yes. The practice runs in a modern browser on a phone or computer. A larger screen gives you more room to see the workspace.
Does this replace hands-on training or certification?
No. Portfloor is a practice supplement. It does not issue a trade license or operator certification, and it does not replace supervised training on real equipment.
Does one pass include other trades?
This pass covers CDL Class A. Each other trade has its own 30-day pass.
CDL Class A · 30-day pass
Make time to practice.
$49 USD for this trade. One payment. No automatic renewal.