Emergency egress investigation.
Egress associated with an accident is usually in response to an emergency situation.
The egress may be voluntary or involuntary. Egress is terminated when the individual actually exits the equipment. Ascertain any difficulties that were encountered due to obstructions, opening the exit, or in using the exit after it was open. Assistance that an occupant requires in exiting the equipment could indicate a deficiency in emergency exit design or operation. Human factors contributing to difficulties in the egress.