The rubber doesn't just meet the road in Colorado Springs, it becomes the road.
City officials this summer started testing a new road surface made partly of ground up, melted down tires.
As expected, the new roads are turning out to be measurably quieter.
The city put down about 62-hundred tons of the rubberized asphalt this year at a cost of nearly 450-thousand dollars.
An engineer studying the process says the three- to four-decibel noise reduction is noticeably quieter to most people.
Now the study will look at how long that effect lasts.
As they continue to study the new road surface, officials also hope to prove the new surface is more durable than standard asphalt and provides motorists with better traction.
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