Which approach is least effective for ensuring safety in rail operations?

Ignoring established safety practices is indeed the least effective approach for ensuring safety in rail operations. Safety practices are put in place to mitigate risks and protect both employees and the public. When these practices are ignored, it not only increases the likelihood of accidents and injuries but also undermines the entire safety culture within an organization.

The other approaches, such as the consistent use of personal protective equipment (PPE), adhering to operational guidelines, and training crew members, all contribute significantly to enhancing safety. Each of these practices reinforces a commitment to safety and helps create an environment where hazards are recognized and managed effectively. In contrast, neglecting safety practices can lead to a complacent attitude towards safety, making it the least effective and potentially dangerous approach in rail operations.