Is line clear? railway signalling explained

For Part 4 of our new-build steam locomotive projects survey, we put those replicating extinct Great Western Railway designs under the microscope.

The town of Merthyr Tydfil is situated on the northern edge of the South Wales coalfield in a basin of the Taff valley some 25 miles from Cardiff; it was once so famous for its iron and steel industry

With this year’s ‘Railway 200’ celebrations now upon us, DR JOSEPH BRENNAN looks at the remnants from the original 1825 Stockton & Darlington Railway that we can still see today