Under TC rules, what is the maximum speed at which MDZs can operate?

The maximum speed at which Movement-Direction Zones (MDZs) can operate under Transport Canada (TC) rules is 30 mph. This speed limit is established to ensure safety while allowing for the efficient movement of trains within designated areas. MDZs are typically implemented in regions where train movements need to be managed carefully to avoid risks, such as close proximity to switching points or other restricted areas.

Setting the maximum speed at 30 mph allows for a reasonable balance between operational efficiency and safety, as it provides train operators with the ability to respond quickly to any signals or changes in the operating environment. The 30 mph limit ensures that crews have enough time to react to unexpected situations and can maintain better control of the train's movement.

In contrast, higher speeds may increase the risks associated with the uncertainties present in MDZs, making it more difficult to respond to emergencies. Therefore, the established limit of 30 mph is critical in preserving safe operations in these specific zones.