If the law required day-time running lights, would that waste fuel?

Even is there are no injuries, a happyspeeder knows that a motor vehicle accident will "wreck" your day, not to mention your insurance premiums. Thankfully, there are a number of standard features that make most new cars safer than 20 years ago. Day-time running lights are one example and insurance companies offer discounts for vehicles with this feature.... But what about your fuel efficiency? Do daytime running lights waste your gas? Physics Stuff blogger demonstrates the calculations to determine the answer to this ongoing debate (just kidding, I've never thought about it) on his blog site. Based on his calculations, there is no debate. The fact is, reducing your speed by 1 mph will save more fuel than turning off your daytime running lights. Another source for the math behind this science can be found at: "How stuff works" . Bottom line: Leave your day-time running lights on! They may prevent an accident. If you are really concerned about wasting the fuel: Slowing down a little... Saves a lot! tm

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