CDL CLASS B GENERAL KNOWLEDGE
### Vehicle Inspection and Maintenance - Importance of Vehicle Inspection:
️To ensure safety for yourself and other road users. - Checks During a Trip:
️Monitor gauges, tires, wheels, rims, brakes, lights, reflectors, electrical connections, trailer coupl...
✔️4/32 inch for front tires; 2/32 inch for other tires.
### Pre-Trip and Walk-Around Inspection
- Front Vehicle Checks:
, ✔️Inspect front axle, steering system, windshield, lights, and reflectors.
- Wheel Bearing Seal Inspection:
✔️Check for leaks.
- Red Reflective Triangles:
✔️Carry three.
### Brake and Safety Protocols
- Testing Hydraulic Brakes for Leaks:
✔️Pump brakes three times, then apply firm pressure for five seconds; pedal movement indicates a
leak.
- Starter Switch Key Location:
✔️Keep the key in your pocket during the pre-trip inspection to prevent unauthorized starting.
### Defensive Driving Techniques
- Looking Ahead:
✔️12-15 seconds, or 1 block/1 mile.
- Key Observations Ahead:
✔️Stopping and lane changes.
- Importance of Mirrors:
✔️Essential for seeing the sides and rear of the vehicle.
- Communication While Driving:
✔️Signaling intentions to others.
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