Road Radar

function solve(speed, area) {
  let diff = 0;
  switch (area) {
    case "motorway":
      diff = speed - 130;
      break;
    case "interstate":
      diff = speed - 90;
      break;
    case "city":
      diff = speed - 50;
      break;
    case "residential":
      diff = speed - 20;
      break;
  }

  if (diff <= 20 && diff > 0) {
    console.log(
      `The speed is ${diff} km/h faster than the allowed speed of 20 - speeding`
    );
  } else if (diff < 40 && diff > 0) {
    console.log(
      `The speed is ${diff} km/h faster than the allowed speed of 90 - excessive speeding`
    );
  } else if (diff > 40 && diff > 0) {
    console.log(
      `The speed is ${diff} km/h faster than the allowed speed of 130 - reckless driving`
    );
  }
  if (diff < 0) {
    console.log(`Driving ${speed} km/h in a 50 zone`);
  }
}
solve(40, "city");
solve(21, "residential");
solve(120, "interstate");
solve(200, "motorway");