// Next signal of automatic control
public void NextSignalButton()
{
TrafficLightsSignal signal = (TrafficLightsSignal)trafficLights.IncreaseSignalNum();
currentSignalText.text = signal.ToString();
trafficLights.ChangeSignal((int)signal);
}
// Return current traffic light signal in string format
public string CurrentLightSignal()
{
return(lightsSignal.ToString());
}