Hazard Unstable mode of transport
Knowledge and understanding
|Unstable mode of transport||
Understand all associated hazard knowledge
As the stability of vessels is a specialist topic, this is covered in the separate hazard – Unstable vessel.
If there are casualties involved, also refer to Casualty involved with an unstable mode of transport.
Instability may result from damage caused to the mode of transport during the incident, as a result of its resting position, or a combination of these factors. This section does not cover the stability of any damaged infrastructure, such as buildings and bridges, which may be associated with significant additional hazards including collapse, live electricity or gas leaks.
If the unstable mode of transport continues to move or collapse, it could result in injury to personnel, other emergency responders or members of the public. It could also cause damage to the surroundings, including other modes of transport, buildings or the environment.
The risk associated with incorrect stabilisation application, or poorly managed and maintained stabilisation, increases dramatically the larger or heavier the mode of transport. Its cargo may be secured by collision damage, but it should be remembered that ramming, cutting away or pulling may release it, allowing it to move in an uncontrolled manner.
At the scene of a transport incident the topography may not be immediately obvious. A noticeable hill or slope may be a prompt to secure the vehicle or craft, but an insignificant gradient may be overlooked, resulting in an uncontrolled movement.