Tax credit bills top of mind in D.C. at annual 'Day on the Hill'
AAR report: Weak coal demand drags down U.S. roads' weekly carloads
LACMTA adds underground alternative to Regional Connector study
Denver RTD advances FasTracks program measures
WMATA to outfit cars with door control, rollback protection devices
Updates from Bombardier, Lockwood, Andrews & Newnam, AECOM, RailComm and Ricardo