A recent study in the March 2013 issue of Optometry and Vision Science shows that 20 and 30 year olds that wear yellow polarized sunglasses can have a reduction of 450 ms for driving reaction times. This can equate to a distance of 7.5 meters while driving at 60km/hr or 13.9meters while driving at 100km/hour.
Yellow sunglass lenses are available but are less common. You may also benefit from this effect if you use brown polarized lenses.
Dr. Michael Nelson, OD
Waverley Eye Care