What can insufficient brake fluid lead to during operation?

Insufficient brake fluid can lead to brake failure, which is a critical safety concern. Brake fluid is essential for the hydraulic braking system to function properly. When the brake pedal is engaged, the fluid transmits force from the master cylinder to the brake calipers or wheel cylinders, activating the brakes. If there is not enough fluid, air can enter the system, or there may not be enough hydraulic pressure generated to effectively engage the brakes. This can result in a gradual loss of braking power, creating dangerous conditions where the vehicle may not stop as expected or may not be able to stop at all. Ensuring that the brake fluid level is maintained is crucial for the effective operation of the braking system, directly impacting vehicle safety.