public class RoadSensor {
    private boolean hazardDetected; //flag for whether a hazard is detected
    private String roadwayDetails; //stores road quality details, eg wet, uneven
    private double[] laneEdges; //stores distance to left/right lane edges
    private String roadSigns; //stores roadsign text for visible signs

    public void detectLaneEdges() {
        laneEdges[0] = 1;
        laneEdges[1] = 1.1;
    }

    public int detectSpeedLimit() {
        //image intepretation api call to review any street signs with a speed limit marking
        //in practice this will be combined with route mapping data to confirm current
        //speed limits
        return 45;
    }

    public int identifyHazard() {
        //image processing algorithms from external cameras would
        //review data and identify a hazard
        //types of hazards could be
        //Stopped vehicle
        //Road construction
        //lane closure
        //pedestrian on roadway
        //stationary object on roadway
        //for testing, this function will return 0 to signal no hazard detected
    	//for testing purposes, this function will roll a 1/100 chance of detecting a hazard
    	double detection = Math.floor(Math.random()*100);
    	if (detection == 1) { return 1; }
    	else { return 0; }
    }
    
    public int detectTrafficLight() { //rolls a 1 in 5 that a traffic light will be detected when approaching an intersection
    	double detection = Math.floor(Math.random()*5);
    	if (detection == 1) { return 1; }
    	else { return 0; }
    }

}