2008TB/T 2769-2008 Test method of heavy duty railway motor trolley
1997TB/T 2769.5-1997 Heavy-duty rail car test method single-machine emergency braking distance test
TB/T 2769.5-1997 Heavy-duty rail car test method single-machine emergency braking distance test was changed to TB/T 2769-2008 Test method of heavy duty railway motor trolley.