PURPOSE: To enable to drive a train by energy-saving by commanding a notch- off point or a brake start point responsive to a change of acceleration or deceleration force of the train simultaneously when the force is switched in response to the adhesion coefficient of rails.

CONSTITUTION: An idle processor 4 reads out a notch-off speed 4a corrsponding to the running time from a table 7 or 8 responsive to weather information 13. A pattern generation processor 5 reads out an output 5a from a table 9 or 10 responsive to the information 13 when an idle command 20b is applied in case that the actual speed 16a becomes higher than the speed 4a. When a distance signal 17a becomes higher than the output 5a to provide a pattern generation signal 21a, a brake processor 6 reads out a speed 5a responsive to the distance signal 17a from a table 11 or 12 responsive to the information 13. A comparator 22 outputs an idle command 22a when the actual speed 16a is lower than the speed 6a, and outputs a brake command 22b when it is higher than the speed 6a.