Work in Progress: Power Car 2037 brings up the rear of Acela Express Train 2254, which has just passed through Princeton Junction Station. The Amtrak track worker on the platform is holding up a Roadway Worker Sign as a safety measure while a crew works on Track 4 as part of the New Jersey High-Speed Rail Improvement Project. Note the out-of-service Arrow III Dinky set in the pen on the far left.