The early 1880s saw a second railroad constructed from the Pontiac area, through Oxford to Port Austin. Known as the Pontiac, Oxford, and Port Austin Railroad, or P.O. and P.A., it later became the Pontiac, Oxford, and Northern (P.O. and N.), and finally the Grand Trunk Western Railroad. With the expansion of the second rail line through town, it now became possible to travel to the tip of Michigan's thumb in one day. By 1900, a third, all electric powered passenger rail line known as the Detroit United Railway (D.U.R.) was extended through Oxford from Detroit to Flint and was noted for maintaining limited cars daily, both north and southbound. Over the years, the D.U.R. was involved in many collisions with automobiles, often resulting in death or injury to those whose automobiles tangled with the interurban cars at grade crossings. As automobile transportation became more reliable and roads improved, a growing percentage of the populace chose to travel by these means, forcing the demise of the D.U.R. in 1931.