What warning measures are installed in the driver’s compartment of a vehicle with a pneumatic braking system (air pressure)?

1. Correct answer: Warning lamp, warning buzzer, and air pressure gauge.
2. Red warning lamp in the middle of the dashboard.
3. Warning lamp and emergency braking handle.
4. Warning lamp and independent brake.

WhyA vehicle with air brakes has a warning lamp, a warning buzzer and an air pressure gauge in the cab. That way the driver sees a pressure drop at once.