Why were traffic lights invented?

Published February 24, 2022

Views 595K | Likes 1.04K | Comments 0

Views#806,653

Views#181,956

Channel

Mystery Science

Mystery Science

1.03M subs•270 videos•Apr 2017

Views

595,383

Likes

1,042

Comments

0

Performance vs. channel

Outlier score

Engagement rate

Revenue estimate

Total (all-time): $417 – $1.19K

Based on estimated $0.7–$2 CPM.

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About

Are your kids wondering: Why were traffic lights invented? This question came from Ryan, a student from the United States. Like, share, and vote on the next question here: https://mysterydoug.com/vote

Published: February 24, 2022
Made for kids: Yes

More features coming

We're working on new analytics and tools. Stay tuned.