Cassidy

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Cassidy

  1. 1. ALL ABOUT STOP AND GOLIGHTSBY: CASSIDY
  2. 2. HOW DO PEOPLE USE IT They use it to tell them when to stop or to go. So thenthey don’t crash their car.
  3. 3. WHY DO PEOPLE NEED IT They need it because they might crash there car if theboth sides go at the same time.
  4. 4. When was it mostly been used forthe first time In 1882.
  5. 5. Who invented it Garrett Morgan was one of the first inventors. I do notknow who was the first person really made it.
  6. 6. HOW HAS IT CHANGED OVER THEYEARSIt has changed by not using a lever and being so close to it.The reason why they changed it so fast is because it exploited.Then it maybe killed a man.
  7. 7. WHAT ARE THE ADVTGES They help us not get in car crashes. Or they help uskeep are kids safe.
  8. 8. WHAT ARE THE DISADVENTEGES Some bad things about them are easy to vandalize oreasy to be knocked down in a storm.
  9. 9. WHAT IS Similar I think a stop and go sign , yield sign and the speedlimit signs.
  10. 10. PICTURES
  11. 11. WHAT IS IT MADE OUT OF It is made out of a timer, wirers and it used to havelever.

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