In road riding, cyclists either ride in a pack known as the peloton or a pace line called the echelon. The closer each rider is to the rider in front of him, the more wind resistance decreases. The composition of the wheels, spokes, tubes, frames, and drop bars contribute to the aerodynamic efficiency of the bicycle. Aerodynamic wheels can have very substantial effects. They can lower the wind drag from wheels with round wire spokes and require only half of the power to rotate.
Aerodynamic frames can reduce wind resistance more than frames with round tubes.
The most important areas of the frame are the fork, head tube, and handlebars. The best aerodynamic frames have air foil shaped leading edges and seat tubes. Road and track bikes are equipped with drop bars to lower the position of the torso and to narrow the elbow position while bringing the elbows closer together. Aerobars are another type of drop bar that lowers the torso into a more comfortable riding position. With a more tight riding position, aerodynamic efficiency will increase.