Albtalbahn
The opening of the Alb Valley Railway from Karlsruhe to Busenbach on 14 May 1898 was followed by the opening of the Busenbach–Ittersbach section on 10 April 1899. These lines were originally metre gauge. The extension to Brötzingen, then a suburb of Pforzheim, followed on 2 January 1900. The line was initially operated with steam locomotives.