+private:
+ int serial_fd;
+ bool p50_enabled;
+ bool power;
+ std::list<Command> queue;
+ std::map<unsigned, Turnout *> turnouts;
+ std::map<unsigned, Locomotive *> locomotives;
+ std::map<unsigned, Sensor *> sensors;
+ Msp::Time::TimeStamp next_event_query;
+ bool poll_sensors;
+ bool debug;
+ Msp::Time::Timer timer;
+