Definition: In this task, you need to generate an appropriate title for the given summary of some paragraph. The generated title must be short and should include the main topic of the given text. Your summary should be less than 20 words long.
Input: Urgent safety guidance for wagons carrying dangerous goods has been issued after a derailment in which 330,000 litres of diesel was spilled.

Llangennech derailment: Safety guidance for dangerous goods