Doomsday looming for many truckers. Thousands of truckers servicing the LA-Long Beach port complex are facing a day of reckoning this New Year's. That's because Jan. 1 is the day new clean-air guidelines go into effect at the ports, banning all pre-1994 trucks, and 1994-2003 rigs that have not been retrofitted with costly diesel particulate filters. [News Source]