virtual void set_loco_speed(unsigned, unsigned) = 0;
virtual void set_loco_reverse(unsigned, bool) = 0;
virtual void set_loco_function(unsigned, unsigned, bool) = 0;
virtual void add_turnout(unsigned, const TrackType &) = 0;
virtual void set_loco_speed(unsigned, unsigned) = 0;
virtual void set_loco_reverse(unsigned, bool) = 0;
virtual void set_loco_function(unsigned, unsigned, bool) = 0;
virtual void add_turnout(unsigned, const TrackType &) = 0;