Electric cars are affordable, practical, quiet, and good for the environment. And now they're changing the way we think of pedals.
Electric cars are already a game-changer for the automotive industry. They’re increasingly perceived as affordable, practical, quiet, and good for the environment. Adapting to a world where electric cars are more prevalent means adjusting to a few changes. For example, instead of pulling over at a gas station to fill up, drivers plug in to recharge. One of the biggest adjustments, however, may be learning how to slow down and brake in a whole new way. Many carmakers are designating one pedal for both speeding up and slowing down.
How Regenerative Braking Works
For years, motorists have been accustomed to using one pedal for the gas and one pedal for the brake. (Of course, manual transmission cars have a third pedal for the clutch.) Electric vehicles are changing all of that thanks to something called regenerative braking.
Regenerative braking turns a vehicle’s motor into a power generator of sorts. Every time a driver hits the brakes, the friction, or drag, created by the braking process generates energy. In a traditional internal combustion engine, the energy is lost. In electric vehicles, when a car begins coasting, the motor begins functioning as a generator, producing and collecting electricity from the wheels. Not only does this save wear and tear on the brakes, but it feeds energy back to the car’s battery to improve driving range.
Regenerative braking changes the way cars use energy, but that’s just the beginning. It also changes the way drivers drive. With this approach, the accelerator pedal is used to both speed up and slow down the vehicle.
Although this sounds like cutting-edge technology, regenerative braking has actually been around for years. Trains and trolleys have used regenerative brakes for more than a century, and in 1967, AMC introduced a concept electric car called the Amitron that featured regenerative braking.
Now, it has become a distinctive feature of electric cars, beginning with the release of the Tesla Roadster in 2008. Today, electric models including the BMW i3 and the Chevrolet Bolt EV have embraced one-pedal driving.
Driving with One Pedal
Pressing down on the pedal still makes the car increase speed, but the big difference comes when a driver takes the foot off the accelerator. Instead of coasting, the car immediately slows down — much harder and faster than when a driver releases the gas pedal in a traditional vehicle. To slow the car, drivers learn to release the one pedal instead of pressing a second pedal.
One of the big benefits of this form of braking is that it’s actually easier on drivers who are in stop-and-go traffic and would normally switch back and forth between the gas pedal and the brake.
Depending upon the design of the vehicle, releasing the pedal brings the car to an eventual, complete stop, although there is still a brake pedal for hard stops or emergencies that call for rapid braking. The big difference drivers see is in how often — or how seldom — that brake pedal actually gets used.
Over time, drivers master this type of pedal power and enjoy a smoother experience and rarely bother to hit the brake at all.
Automakers are ready to take regenerative braking into the future — and take today’s drivers along for the ride. Have you driven an electric car with regenerative braking? Tell us about your experience on Facebook.