Dan, an REI Outdoor School instructor, shows the safest way to slow down and stop your road bike in this video. Tip: The left hand controls the front brake; the right hand controls the rear brake. The key to slowing and stopping is to grab then both at the same time and with the same pressure. Caution: Do not use too much front brake! Tip: For sudden stops, shift your weight to the back of the bike to help maintain your stability.