Overground

The main network system of the railway. It was the first transport type added in the game. It is based on the real London Overground. The railway is circular just like Sub Surface. Sub Surface also shares the line of the Overground. It has no level crossings. The railway has only one signal box at Cross Road. Today now called mainline

Trivia

 * The depot used to look differently until other transport was added.
 * Class 378 are powered by third rail or by overhead wires, but the track has no overhead lines or third rail.
 * Class 172 used not to have horns.
 * Class 315 is similar to 150/1.
 * Class 317 is similar to 150/2.
 * There was used to be a First Great Western HST regen in the bushes, but YrrebRBLX deleted it because he added it for testing.
 * There was a railtour train with a Class 37 and Mk1 passenger cars, but it is not spawned in the game.
 * Now called Mainline, the train have : class 378 , class 185 and class 442