Signaling and horn — Missouri Permit Test

Use your turn signals before you change lanes, turn right or left, merge into traffic, or park.

Four maneuvers, and every one of them moves your car into somebody else's space.

You should use your turn signals before you change lanes, turn right or left, merge into traffic, or park.

Get into the habit of signaling every time you change direction, even when you do not see anyone else around.

You cannot see everyone who can see you. The cyclist behind the parked van is the reason.

Signal even when you do not see anyone else around. It is easy to miss someone who needs to know what you are doing.

If there are other streets, driveways, or entrances between you and where you want to turn, wait until you have passed them before signaling.

A signal given too early points at the wrong opening, and somebody pulls out into you.

If there are other streets, driveways, or entrances between you and where you want to turn, wait until you have passed them to signal.

There is only one reason to use your horn, and that is to warn other drivers.

Used as a comment it teaches other drivers to ignore it. Then it is not there when you need it.

There is only one reason to use your horn: to warn other drivers.

Your horn should not be used as a display of anger or frustration, and needless use may distract other drivers and cause a crash.

A horn sounded in temper makes the other driver react, and the reaction is the danger.

Needless use of your horn may distract other drivers and cause a traffic crash.

When should you use your turn signals?

Before any turn, merge, lane change, or park. Four maneuvers, and every one of them moves your car into somebody else's space. Missouri Driver Guide, p.58: “You should use your turn signals before you change lanes, turn right or left, merge into traffic, or park.”