In an era of technical progress and environmental awareness, alternative drive systems for vehicles have become much more important. However, in addition to their advantages, incidents involving these vehicles also bring with them special safety aspects.

In emergency situations involving alternatively powered vehicles, a wide range of behaviors can be exhibited. Regardless of the type of powertrain, one significant challenge is the potential release of flammable or toxic gases, vapors, and liquids. This may occur if the vehicle's fuel or gas storage integrity is compromised, or if a battery electric vehicle undergoes thermal runaway.

Such incidents may lead to:

• An increased risk of explosions, especially where gases and vapors might accumulate in poorly ventilated areas like tunnels and garages.
• Exposure to toxic substances for both responders and victims, particularly when proper protective equipment (PPE) is not worn.
• The risk of jet flames and deflagration.

One important component lies in gas detection - an accurate process of identifying and measuring potentially hazardous gases in such scenarios.