On Monday 23 January 1911, a collision between a passenger train and a coal train on the Taff Vale Railway line at Hopkinstown, outside Pontypridd in Wales, resulted in the loss of eleven lives. The accident, also known as the Hopkinstown rail disaster or the Coke Ovens collision, occurred at 9:48 am, when the 09:10 passenger train from Treherbert to Cardiff, heading towards Pontypridd and carrying about 100 people, rounded the bend at Gyfeillion Lower signal box with a clear signal ahead. The train collided with a stationary coal train that was using the same line. The impact caused the underframe of the front carriage to rise up and pierce the carriage directly behind it.