While touch and smell don't help you navigate your vehicle, they may reveal problems with your car and its relationship to the road.

Touch, or more commonly called "the feel of the road", is important for warning a driver of road conditions or mechanical problems. If you steering is loose feeling or vibrates at speed, it may indicate a problem with the vehicles suspension or steering. Does the brake pedal seem too hard or soft? Does the steering suddenly get loose? You may be hydroplaning or skidding. Do you feel rumble strips shaking the steering wheel? You could be headed off the road or toward oncomming traffic.   Again, touch is an important sense to warn you of problems with your vehicle or roadway.