Leslie Sheeler of Catonsville read you can track Maryland salt trucks online when it snows, but she can't find the Web site. "Since they no longer use the 'blue' salt, I would be interested in that address." State plows and salt trucks don't have GPS tracking. Baltimore City has it on 125 trucks, but there's no online link yet. The only area tracking system I know that's online is Howard County's: http:--snow2.co.ho.md.us/Index.asp. It's been running for years, with 120 trucks now equipped.