Trial running of services has today commenced on the future Elizabeth Line in a move that sees four trains per hour running between Abbey Wood and Paddington.
Trial running will initially be undertaken from Monday to Thursday, with frequencies gradually increased as preparations for opening ramp up.
The following stage will be Trial Operations, which involve inviting passengers onto trains to test various systems in operation.
Previous test runs have differed to trial running due to not operating to a standard timetable throughout most of the day, but generally consisting of sporadic runs. These have been seen from operating from Abbey Wood for a couple of years now.
Crossrail is due to open in early to mind 2022.