What safety measure includes the removal of track from service?

The safety measure that includes the removal of track from service is related to Track Bulletin procedures. These procedures are crucial for ensuring safety on the railways by providing essential information and instructions about track conditions. When a track is taken out of service, it is often noted in a Track Bulletin, which alerts all train crews and dispatchers about the status of the track, ensuring no trains are allowed to operate on that section until it is deemed safe. This process helps prevent accidents such as derailments and collisions, which can occur if trains inadvertently enter areas that are unsafe for operation.

In the context of rail safety, various measures exist, but Track Bulletins specifically address the operational status of infrastructure and dictate safety protocols for train movements. This is why they are key in managing track safety and facilitating effective communication among train crews about track allowances and conditions.