It noted track renewal was 7 per cent behind schedule, signalling upgrades were 63 per cent behind and overhead line improvements 77 per cent behind.

It will be responsible for the design and construction of the civil engineering, track, overhead line and power supply aspects of the project.

Parallel electrical operations continued until 1955, when the overhead line was removed.

In 1922, the whole line was electrified with supplied by overhead line.

A further 21 units were built from 1954 to 1955 in order to enable the overhead line traffic to be withdrawn.