suggested that alternate single-line sections use the electric tablet system and the older electric staff system; there would be no possibility of mistaking a staff for a tablet. The signalling method continued in use on the line until 1988, when it was replaced by the Radio Electronic Token Block system. The obvious, though costly, solution to the problems of working single lines would be to double the tracks. As finances allowed, the Cambrian Railways (and the Great Western Railway, which took over the Cambrian after the grouping of 1923) had been slowly carrying out the necessary work. Ironically, British Rail actually removed much of the doubled track and some of the crossing stations as part of the Beeching Axe. In August 2019, two passenger trains travelling towards each other entered a single track section on the Romney, Hythe and Dymchurch Railway, a light excursion railway in Kent. Although both trains stopped apart before any collision occurred, a subsequent safety investigation cited the Abermule accident as having "clear parallels with the events leading up to the incident at Romney Sands". See also List of train accidents Notes References External links Railwaysarchive.co.uk summary Reprint of Enquiry into the collision. Scanned printed material Train collisions in Wales Railway accidents in 1921 1921 in the United Kingdom History of Montgomeryshire Transport in Powys Accidents and incidents involving Cambrian Railways 1921 disasters in the United Kingdom January 1921 events in Europe