Infrastructure
The line is double track except for the branch between Thorpe-le-Soken and Walton-on-the-Naze which is single track. It is electrified at 25 kV AC, has a loading gauge of W6 and a line speed of between 40-90 mph, except for the branch to Colchester Town which is 0-35 mph.
Passenger services are operated by electric multiple units. Services to Walton-on-the-Naze are normally Class 321 and Class 360 EMUs. Trains to Clacton are normally Class 360 EMUs and Class 321s.
Class 321:
The Class 321's mostly operate the Walton-on-the-Naze to Colchester local services as 4 cars.
Class 360:
The Class 360's mostly operate the Clacton-on-Sea to London Liverpool Street semi-fast services as 4 or 8 cars during the off-peak and either 8 or 12 cars during the peak hours.
However, some Walton services originating from London use 360's and some peak Clacton services use 321's.
Read more about this topic: Tendring Hundred Railway