When S-cam brakes are properly adjusted,which of the following conditions will result in the most service brake torque?

A) highest pressure in hold-off chambers
B) maximum service brake pressure
C) highest vehicle road speed
D) shortest distance from the brake treadle valve

S-Cam Brakes

Drum brake system in which the shoes are driven into the drum by rotating an S-shaped cam, spreading the shoes.

Service Brake Torque

The amount of torque applied by the service brake system to slow or stop a vehicle, typically measured at the wheels.

Brake Treadle Valve

A valve operated by a pedal that controls the flow of air or hydraulic fluid to the brakes.