When I'm running out in daylight, I usually stick a small light in my pocket. When it is dark or darkness is approaching, I run while holding my "big gun" light, complete with lanyard so I don't drop the thing.
One such time, this happened;
Nasty crash. Can't help but notice the NYPD, good to see another NYC flashaholic.
Even in a well-lit metro, I use my edc lights every day- dark unknown coffee shop bathrooms to find the switch, night walking thru dimly lit area's, not to mention possible emergencies. I don't usu jog at night, but i do carry my light keychain (just keys, sak classic, quantum d2 or ultra-small 1xaaa). I even keep it in my pajama pocket, and of course there's a light on my bedside table while sleeping...