See also:

Blind Spot Mirrors
The blind spot mirror is a small convex mirror built into the upper and outer corner of both outside mirrors. It can show objects that may be in the vehicle's blind zone. ...

Turn Signal Indicator
The vehicle may also have a turn signal indicator on the mirror. An arrow on the mirror flashes in the direction of the turn or lane change. ...

Speedometer
The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph). ...