06. Road Radar Last Decision

function roadRadar([speed, area]) {
    const speedLimit = {
        residential: 20,
        city: 50,
        interstate: 90,
        motorway: 130
    };
    const result = {
        0: 'speeding',
        1: 'excessive speeding',
        2: 'reckless driving'
    }

    let speeding = speed - speedLimit[area];

    if (speeding > 0) {
        speeding = parseInt(speeding / 20.5);
        console.log(result[speeding] || result[2]);
    }
}