Definition: Generate an appropriate title for the given text. The generated title must be short and include the main topic of the text. The preferred titles are under fifteen words.
Input: South Wales Police are appealing for witnesses to the collision between Rhydycar and Pentrebach, near Merthyr, at around 18:30 BST. A police spokesman said the man, who was from the Dowlais area, lost control of his green Kawasaki motorbike, which collided with the central barrier. The man was airlifted to the hospital.

Merthyr A470 crash biker, 22, dies in Cardiff hospital