Why does everyone drive with high beams on? Moved here from the east coast a year ago. One major change from driving behavior, debri on the road, speeders is that so many drive with their high beams on, and ignoring flashes. 

Is there some special reason? I did notice during rain, the lane markers are not easily noticed. I drive all over the country for work, and out here in the west/south i notice trucks do it a lot but in Houston, so many cars do as well.