On a long or steep downgrade, the foot brakes should be used _________.

The use of brakes on a long and/or steep downgrade is only a supplement to the braking effect of the engine. Once the vehicle is in the proper low gear, the following is the proper braking technique:
- Apply the brakes just hard enough to feel a definite slowdown.
- When your speed has been reduced to approximately 5 mph below your safe speed, release the brakes. (This brake application should last about 3 seconds.)
- When your speed has increased to your safe speed, repeat steps 1 and 2.