In the event of a bridge strike, which action is appropriate for a dispatcher regarding trains?

In the scenario of a bridge strike, the most appropriate action for a dispatcher is to restrict access to the bridge until it has been properly assessed and cleared for safety. This ensures that no additional trains approach the potentially compromised structure, which could lead to further incidents or exacerbate an already hazardous situation. By restricting access, the dispatcher prioritizes safety and prevents any trains from passing over a bridge that may have sustained damage or could pose a risk to rail traffic.

While keeping nearby stations informed is important, merely communicating with those stations does not actively prevent trains from approaching the bridge. Additionally, allowing trains to proceed at normal speed can result in serious risks if the structural integrity of the bridge has been compromised. Issuing a Form D line 13, which is a notice used to relay specific instructions regarding train operation, could be part of the overall safety communication but does not in itself prevent access to the bridge. Therefore, restricting access directly addresses the immediate risk presented by the bridge strike, making it the most responsible decision for a dispatcher in this situation.