The MTH 2231-1 and 2231-3 New Haven RDC 4 car set is a ready-to-go model train set featuring a diesel locomotive with AC power type and digital control system. The set includes four cars in a multicolor New Haven corporate roadname, with features such as light and sound functions. Made of plastic and diecast materials, this 1:48 scale model train set is a vintage piece from 2001, perfect for collectors and hobbyists looking to enhance their rail system.