DART ridership is going through the roof. A report from the transit authority says 10 million people used its buses, H-O-V lanes, light rail lines and the Trinity Railway Express. That is an all-time record. And the percentage of usage is up April 2007 to April 2008. Light rail ridership is up almost nine percent. HOV use is up 35 percent, TRE Ridership is up 17 percent and three percent more are riding the buses.