Did you know the first traffic light was put up over 150 years ago in London? Back then, a person had to change the colours using special lamps that used gas to produce light. The person would turn the lamps and place different coloured glass in front of them to change the colours from red to green and back again. They looked very different from the traffic lights we see today. Modern traffic lights work automatically using sensors and timers. The sensors detect cars, bikes, and people walking, so the lights change when needed to keep things safe.
Traffic lights are important for our safety when we walk, ride bikes, or travel in cars. They help prevent accidents and keep everyone moving smoothly. Pedestrian signals, which help people know when it is safe to cross the street, also play a big role in keeping us safe. Crosswalks, including zebra crossings (the white striped lines on the road), go along with pedestrian signals. These help drivers know where to stop and let people cross safely. Zebra crossings do not always have traffic lights, but drivers must stop when they see someone about to cross. Without traffic lights and pedestrian signals, it would be hard to know who should go first, leading to confusion and dangerous situations.
What Do the Colours of the Traffic Light Mean?
Traffic lights use three colours: red, yellow, and green. Each colour sends a message to drivers, bikers, and others on the road:
- Red means stop: When the light is red, all vehicles must stop and wait. This keeps cars from crashing and lets pedestrians cross safely. But even with a red light, everyone should still look both ways before crossing.
- Yellow means slow down: This light tells everyone to slow down and get ready to stop. it also notifies people who are still crossing the street to know how much time they have before the traffic light changes its colour.
- Green means go: When the light is green, it is safe for cars to move forward.
Types of Pedestrian Signals
In addition to traffic lights, there are special signals just for people walking. Here are the main types:
- Walking Person:This symbol looks like a person walking. It means it’s safe to cross the street.
- Red Hand:This symbol looks like a hand. It means you should stop and wait; do not cross.
- Countdown Timer:Some signals have a timer that counts down the seconds until the light changes. This helps you know how much time you have to cross.
- Sounds:Some signals make sounds, like beeps, to help people who can’t see well know when it’s safe to cross.
Traffic lights and pedestrian signals are more than just colorful lights—they are lifesavers. They help us know when to stop, wait, and go. So, the next time you see a traffic light or pedestrian signal, remember what each color means. Children should always hold the hand of an adult while crossing the street to stay extra safe. Staying safe on the road is important for everyone, so let’s all be smart, follow the lights, and look out for each other
