These emergency light bars are super helpful. Public safety workers use them so that people can see where they are because they work at night a lot. They get peoples attention and lets them know to be careful and slow down because someone is at work.
I think these LED bars are really cool. The last thing you need is a light to go out on your police car. That could be really dangerous if you're police vehicle can't shine its lights. LED's are becoming a widely used product.
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