Originally Posted by HiYoSilver

Notice that with both lights on, the dark object could not be seen much sooner. One light
is flood and one is spot, so you wider field of vision.

We can do the math tomorrow and calculate safe riding speed. This is approximately
1 1/2 house lots, so I would think safe speed would be roughly in the neighborhood of
13 mph. But we'll see who can make the best math case allowing for a 5 second reaction time
gap.