Third rail - Network Rail

nVent Heating Solutions for Third Rail Electrification

What does touching the third rail mean? - Quora

Third rail hi-res stock photography and images - Alamy

Third rail - Network Rail

The third rail and overhead lines: How much electricity do they carry and how harmful are they? - Fun Kids - the UK's children's radio station

Railway electrification in Great Britain - Wikipedia

3rd and 4th rail dimensions and settings

Third Rail and 3rd Rail System Details

Third rail hi-res stock photography and images - Alamy

3rd and 4th rail dimensions and settings