Câu hỏi về đèn giao thông

Why do traffic lights use the colors red, yellow, and green?

• Because red is the most beautiful color

• Because red is easy to see from afar and warns of danger

• Because red is the favorite color of drivers

• Because red is a cool color

What does the green light in traffic signals mean?

• Stop

• Go fast

• Proceed

• Turn left

What is the function of the yellow light?

• Decorative light

• Indicates about to stop or about to go

• Indicates the vehicle must reverse

• No function

What do the three colors of traffic lights help us with?

• Knowing when to turn on the high beam

• Knowing when to honk

• Knowing when to stop, wait, or go

• Knowing which vehicle has priority

How does a traffic light operate?

• Green → Yellow → Red

• Red → Yellow → Green

• Red → Green → Yellow

• Yellow → Red → Green

How does a traffic light usually operate?

• Controlled by a person turning it on and off

• Based on the emotions of the driver

• According to a pre-programmed cycle

• Randomly turning on and off

What happens if there is a power outage?

• It still operates as usual

• It does not operate, which may cause traffic jams

• It continuously turns on the green light

• It automatically turns off the running vehicles

What should be done when programming an automatic traffic light?

• Choose the most beautiful color

• Set the order of the lights

• Change the light bulb

• Stick colored paper on the light

What does a robot controlling a traffic light need to know?

• The preferences of the driver

• The timing of each light

• The license plate number

• The color of the vehicle

Why is it necessary to have accurate timing when programming traffic lights?

• To make it look beautiful

• To avoid accidents and maintain traffic order

• To keep the light on longer

• To change colors continuously