train derailment definition

train derailment means any case in which at least one wheel of a train leaves the rails.
train derailment or „derailment of trains‟ means any case in which at least one wheel of a train leaves the rails;
train derailment means any case in which at least one wheel of a train leaves the rails. 1.8. ‘level crossing accidents’ means accidents at level crossings involving at least one railway