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Fog lights and distance estimation
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The use of 2 rear fog lights will improve the driver's ability to estimate distance.
http://hfs.sagepub.com/cgi/content/abstract/43/3/442
http://www.wisegeek.com/what-are-fog-lights.htm
Be careful to avoid any accidents. Always have someone on standby to alert the drivers, to prevent them from colliding into the stationery cars
