Which items inside the cab do you need to make functional in order to receive credit for them?

These items are essential for the safe operation of the vehicle.
- Air and city horns are used to signal to other drivers and pedestrians. They must be loud enough to be heard from a distance and must be in good working order.
- Blower motors, temperature control, and diverter are used to heat and cool the cab of the vehicle. These items must be functional to ensure that the driver is comfortable and alert while driving.
- Lights are used to see and be seen by other drivers. All of the vehicle's lights must be in good working order, including the headlights, taillights, turn signals, and brake lights.
- Windshield wipers are used to keep the windshield clear of rain, snow, and other debris. They must be in good working order to ensure that the driver has good visibility.