Signals - Light and Sound

People also use devices to communicate (send and receive information) over long distances.

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A driver is stopped at a stoplight.

He waits for the light to turn green.

The driver looks to his right.

He sees an interesting store.

Honk, honk, is the sound heard from behind.

Why would another driver beep their horn?

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The sound is a signal.

The driver of the car wants to move.

The driver of the first car looks up.

The light has turned green.

He steps on the gas pedal.

The car moves forward.

The driver now needs to turn left.

What do you think he will do to signal the left turn?

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The driver comes up to the next intersection.

He turns on his blinker.

The light blinks on and off.

It tells other drivers which way the car will be turning.

It is another way to send signals.

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As the driver eases up to the next intersection, the light

turns red.

The driver knows to stop.

How do the lights on a traffic signal tell a driver what to do?

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The traffic lights change to green.

This tells car drivers to move their car forward.

Red lights tell drivers to stop.

Yellow are a warning.

Drivers may need to stop.

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Traffic lights give information.

They talk to us but don’t say a word.

Drivers signal to each other.

They too do not have to speak.

What are ways drivers signal each other.

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Drivers can honk their horn.

Horns get people’s attention.

It may mean, please move.

It could mean please notice me.

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Cars also talk to people.

Ding, ding, ding means buckle your seatbelt.

Click, click, click means your blinker is on.

Lights on the dash give us warnings.

Check your tires.

Check your oil.

All are warning lights.

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Light and sound can be used to signal.

Police cars have loud sirens.

Sirens tell us to move out of the way.

Police cars also have flashing lights on top of them.

Both sound and light are great ways to signal.

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There are many ways we use light and sound to signal when

we drive cars.

What are some other signals you can think of?

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