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All idling is bad — and it's worse the longer you idle for — but idling in traffic or poorly ventilated spaces like parking garages or under overpasses "can be particularly harmful," Ganjian says.
Idle speed, sometimes simply called "idle", is the rotational speed an engine runs at when the engine is idling, that is when the engine is uncoupled from the drivetrain and the throttle pedal is not depressed. In combustion engines, idle speed is generally measured in revolutions per minute (rpm) of the crankshaft.
Systematic motor-vehicle safety efforts began during the 1960s. In 1960, unintentional injuries caused 93,803 deaths; [5] 41% were associated with motor-vehicle crashes. In 1966, after Congress and the general public had become thoroughly horrified by five years of skyrocketing motor-vehicle-related fatality rates, the enactment of the Highway Safety Act created the National Highway Safety ...
The bottom line: Contrary to popular belief, idling your car does not prolong the life of your engine, rather it shortens it. A simple solution Thankfully, your car doesn't run rich the entire winter.
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Idle reduction can also be achieved by more efficient control of stop lights [34] and reducing congestion on roadways. States and municipalities that have employed data analytics to reduce bottlenecks and improve traffic flow—which reduces idling—include Austin, Texas and the state of Florida. [35]
Comparing motorways (controlled-access, divided highways) in Europe and the United States, according to 2012 data, Denmark had the safest motorways with a rate of 0.72 road fatalities per 1 billion vehicle-km, while the United States had 3.38 road fatalities per 1 billion vehicle-km on its Interstate-type highways, often called freeways. [27]
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