You can save on fuel costs, lower air pollution levels, slow global warming and reduce wasteful wear and tear on your vehicle by using smart driving techniques. Avoid rapid acceleration and sudden braking. Drive sanely. Aggressive driving can lower your gas mileage by 33 percent. Slow down. You can waste 30 percent of fuel by speeding. For every five miles you drive over 55 mph, you use six percent more fuel. Anticipate stopping by slowing down earlier, coasting longer and spending less time at the traffic light. Idling wastes a lot of gas. Every 2 minutes idling uses as much fuel as it takes to drive 1 mile. If you’ll be stopped for a while, turn the engine off. You’ll use less gas in restarting the car than in idling for a time. Avoid drive-throughs. Park and go inside, instead. The lighter your car, the better mileage you’ll get. Clean out your trunk and back seat. Keep tires inflated. Decrease use of the air conditioner if your AC runs off a gas engine. To save time and cut your fuel bill by half (or more), combine errands, invite others when shopping and consider carpooling. Keep up with regular car maintenance. For your health, the environment and your wallet, walk or ride your bicycle when you can.