What about the capacity research in the yards?
According to my knowledge the required number of the terminal tracks depends upon the inbound and outbound freight train flow which the terminal is about to process and handle for unit time. This does not include only the arrivals and departures of freight trains but also their dwell times on the terminal tracks. These dwell times depends on the shunting units in the terminal.
In reality when capacity research is needed, one should consider the arrival rate and the departure rate of the inbound and outbound traffic flow. There may have “rush-hours”, in which the arrival rate exceeds the departure rate of freight trains. In such a case congestions occur and a terminal is blocked. To avoid such a situation the terminal must be equipped with so - called “buffer” areas.
How is treated this subject in US?
According to my knowledge the required number of the terminal tracks depends upon the inbound and outbound freight train flow which the terminal is about to process and handle for unit time. This does not include only the arrivals and departures of freight trains but also their dwell times on the terminal tracks. These dwell times depends on the shunting units in the terminal.
In reality when capacity research is needed, one should consider the arrival rate and the departure rate of the inbound and outbound traffic flow. There may have “rush-hours”, in which the arrival rate exceeds the departure rate of freight trains. In such a case congestions occur and a terminal is blocked. To avoid such a situation the terminal must be equipped with so - called “buffer” areas.
How is treated this subject in US?