What Are Those Black Squiggles on Roads?

What Are Those Black Squiggles on Roads?

By iHeartPodcasts

When asphalt pavement cracks, a squiggle of black sealant can help prevent further damage. Learn more in this episode of BrainStuff, based on this article: https://auto.howstuffworks.com/road-tar-squiggle-drizzle.htm

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