Caution: A convex mirror can make things (like other vehicles) look farther away than they really are. If you cut too sharply into the right lane, you could hit a vehicle on the right. Check the inside mirror or glance over your shoulder before changing lanes.

The passenger's outside rearview mirror is convex. The surface is curved so more area can be seen from the driver's seat. It also make things look farther away than they really are.