Which flag should be removed first when multiple flags are displayed?

When multiple flags are displayed, the most restrictive flag should be removed first. This is critical because the most restrictive flag indicates the highest level of caution or control required for safe operations in the vicinity. By removing this flag first, you ensure that the most important safety restrictions are lifted, allowing for a transition to less restrictive measures.

Additionally, the process emphasizes a clear hierarchy in signaling, reinforcing that the safety of operations should always be at the forefront. Removing the least restrictive flag or the first placed flag could lead to confusion or unsafe conditions, as those flags represent less critical guidance that still needs to be observed until it is safe to proceed with the next steps. Removing the flag closest to the track might not follow this critical safety protocol, as it does not consider the nature of the restrictions that each flag presents.