The City of Fort Worth does its part to reduce the formation of ozone. On ozone action days, parks and other city property are mowed after 10 a.m. and employees are encouraged to car and vanpool and ride the bus through monthly prize drawings. The city began its proactive ozone reduction approach several years back when it equipped about 800 vehicles to run on propane. On ozone action days, carpool or ride the bus. Minimize cold starts by combining trips.
Most vehicle emissions occur when the engine is cold.
Avoid excessive idling by avoiding rush hour traffic and lines at drive-through windows. Refuel in the evening when it's cooler and be careful not to spill gasoline, don't top off your tank and check to make sure your gas cap seals properly. Always refuel at stations that have installed vapor-recovery systems. Get a summer tune up. Keep the car in the garage.