Infrastructure
The line is about 24 miles long, is double track throughout and is electrified at 25 kV AC using overhead line equipment. It has a loading gauge of W9 and a maximum line speed of 75 mph.
Grade-separated junctions connect each end of the northbound track with the main line. All stations are long enough to accept two, 3-car (20m) EMUs.
Read more about this topic: Hertford Loop Line