I routinely run into people wearing all dark clothing on sidewalks, both walkers and bicyclists. Worse, they are often too busy with phones, game devices, or tablets to pay attention. If they have a lit screen on the device, that’s often the only way I see them. If they don’t have a lit screen, the other way I notice them is a darker spot that blocks the limited light in front of me.
When I am riding or walking at night, I don’t wear dark clothing. I also don’t use my phone except in flashlight mode. I do wear a Day-glo reflective vest on the off-chance the rare person isn’t glued to a device. The vest comes in handy when I cross intersections as vehicles don’t always pay attention to people on bicycles or walking.
As a vehicle driver, I pay attention to the road and avoid using or answering my phone. I use ringtones to know who’s calling me. For unknown callers, it’s an annoying ringtone. If it’s a family member or friend, I pull over as quick as I safely can into a parking lot and call them back.
I seem to be the exception in these cases as most have no problem paying attention to anything other than what’s going on around them while driving, walking, or bicycling.
That’s not including those who are inattentive for other reasons. Been almost hit numerous times because someone cared more about getting somewhere fast, listening to the radio, or talking to others in the vehicle.