What is the required speed for trains over plug rail not in compliance after installation?

The requirement for trains over plug rail that is not in compliance after installation is to operate at Class 1 speeds. This means that trains must adhere to a specific reduced speed limit to ensure safety and minimize the risk of derailment or other issues associated with non-compliant rail. Class 1 speeds generally refer to the lowest permissible speeds that still allow safe operation, taking into account the infrastructure's condition.

The emphasis on Class 1 speeds is crucial because it acknowledges the potential limitations and safety concerns that can arise from using rails that do not meet compliance standards. Operating under these conditions helps maintain safety for both passengers and freight while also addressing potential wear and tear on the rail infrastructure.