This week's Challenge is another fun one that came across my desk. It's a short, fun, historical romp through the fields of yesteryear.
A while back, a reader asked the question:
1. When did turn signals on AUTOMOBILES come to be a thing? Can you determine when the first turn signals were installed on cars? Who invented them?
And that led me to wonder in turn...
2. When did signals on the ROAD come to be a thing? Can you figure out when (and where) the first traffic lights were installed?
This is a fun one. The search insight here will be something about what sources you choose to draw upon.
How will you find out?
When you know the answer (or at least, AN answer), be sure to write up a comment about HOW you found the answer. What sources did you consult, and why those particular sources?