On average, the optimum travel speed for most cars is somewhere around 55 miles per hour. It’s on the slow side, but it saves energy and gets you where you’re going eventually. As a rule, every five miles above 60 reduces fuel economy by about 7 percent. Most highway drivers aren’t settling for the slow lane. Many people are okay with speeding if the flow of traffic allows them to do so. For some states, the posted speed limit is on the rise.
California highways are supposed to travel at 70 miles per hour at most when traffic permits the speed. Drivers in congested areas of the state may only dream of reaching those speeds. They can keep on dreaming as Texas ups the speed limit on some highways to 85 miles per hour. It’s the only state to raise the limit so high. Continue reading →