They will be installed in Cambridgeshire, Hertfordshire, Norfolk and Suffolk.
A number of routes are affected, with services running late or being altered at short notice.
Stations will now how to reveal how unreliable their trains are. But do you know how to use the Delay Repay scheme to claim back money?
Trespass incidents caused more than 18 days of delays over the past year ...
Passengers travelling on Greater Anglia services between London and Essex are facing disruption and delays today due to the police dealing with an incident. The incident involved reports of a person ...