- The front part of the semi-truck that houses the engine, transmission, and driver's cab.
2. Trailer:
- The rear part of the semi-truck that carries the load. Trailers come in various types, including flatbeds, dry vans, refrigerated vans, and tanker trucks.
3. Fifth Wheel:
- A large, round coupling device that connects the tractor to the trailer.
4. Landing Gear:
- Retractable supports located at the front of the trailer that are used to support the trailer when it is disconnected from the tractor.
5. Air Brakes:
- A type of brake that uses compressed air to actuate the brake pads. Air brakes are required on all commercial vehicles over a certain weight.
6. Electrical System:
- The electrical system of a semi-truck provides power to the lights, horn, windshield wipers, and other electrical components.
7. Fuel System:
- The fuel system of a semi-truck stores and delivers fuel to the engine.
8. Cooling System:
- The cooling system of a semi-truck helps to keep the engine from overheating.
9. Exhaust System:
- The exhaust system of a semi-truck carries exhaust gases away from the engine.
10. Suspension System:
- The suspension system of a semi-truck helps to absorb bumps and vibrations from the road.
