Original sentence: The new stock, class 377's, will be fitted with ATO(Aotomatic train operation), and ERTMS (European rail traffic managment systems), or atleast capable of this in the future.The trains will be designed to run under ATO and driver operation, the ATO will be used on the core london city routes, meaning that the train drivers will only need to either makesure the route is clear to proced, by pressing buttons or fisicaly controlle the trains using computer screens telling Him/her when to start braking and exelerating to speed the proses up, up to 24 TPH will run
Edited sentence: The new stock, class 377's, will be fitted with ATO (Automatic train operation) and ERTMS (European rail traffic management systems), or will at least be capable of this in the future.The trains will be designed to run under ATO and driver operation, the ATO being used on the core London city routes.This improves efficiency, allowing a service of up to 24 TPH in teh central section of the line.Under ATO, the train drivers will only need to ensure the route is clear to proceed, before pressing a button to send the train automatically to its next stop