High Quality Content by WIKIPEDIA articles! Westside Express Service (WES) is a 14.7-mile (23.7 km) United States commuter rail line between Beaverton and Wilsonville, Oregon, in the Portland metropolitan area, mostly following busy Oregon Highway 217 and Interstate 5. The diesel-powered passenger rail service opened in February 2009 on upgraded existing freight rail tracks operated by the Portland & Western Railroad (P&W). TriMet, the metropolitan area`s regional transit agency, manages and funds the service, and it also owns and maintains the railcars and stations, but P&W staff operate the vehicles. In planning since the mid-1990s, the line has five stations: two in Beaverton, one in Tigard, one in Tualatin, and one in Wilsonville.