Slow-and-go is always better than stop-and-go, and not just to reduce traffic congestion woes. Maintaining a constant speed in your commute increases fuel economy, because it takes much more energy to move a stopped vehicle than to keep a vehicle moving. In fact, it can take 20 percent more fuel to accelerate from a full stop than from 5 miles per hour. Many truckers practice this approach to reduce shifting ten-speed truck transmissions. Drivers who try to achieve the highest mileage possible, often called “hypermilers,” practice looking ahead down the road to anticipate stops and to coast as much as possible.