Train travellers have been hit by even more problems, after a broken down train disrupted services between Norwich and Ely.
There are delays of up an hour on that route - used by Greater Anglia and East Midlands - until further notice, because of a broken down train near Attlebrough.
Because of this, there are delays of up to 45 minutes between Norwich and Ely and buses are being sent to replace some of the trains.
Passengers from Cambridge to Norwich are being urged to head to Stowmarket to catch trains to Norwich.
It comes on top of two days of problems on the railways.
This morning, passengers on Greater Anglia services from Norwich to London faced delays of up to 30 minutes because osignal trouble at a depot at Ingatestone.
The problem affected trains between Chelmsford and London Liverpool Street and Greater Anglia bosses even suggested that people wanting to get from Norwich to London might be better off going via Cambridge,
It is the second day in a row that train travellers in Norfolk have suffered disruption.
Yesterday there were delays of up to one hour on Greater Anglia between Liverpool Street and Norwich, and between Liverpool Street and Ipswich due to a broken down train at Manningtree.
Services affected included the 5am Norwich to London Liverpool Street train while other services were cancelled.
Tickets were accepted on First Capital Connect and Underground services.
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