What is the last resort option to gain access to a railcar?

Removing the roof of a railcar is considered the last resort for gaining access for several reasons. This method is highly invasive and can compromise the structural integrity of the railcar, which can be particularly hazardous in an unstable environment. Furthermore, it creates a larger opening than necessary, which can increase the risk of further hazards, such as the potential for falling debris or exposure to harmful materials inside the railcar.

Using roof removal typically comes into play only after other methods of access have been deemed unfeasible or have failed. The other options focus on less drastic measures that still allow for safe access, such as creating an additional door or manipulating existing doors. These methods are usually preferred because they minimize risks and are more controlled. In contrast, roof removal may cause further complications and is generally reserved for situations where immediate access is critically required and no other options are available.