Wifey B: People is humans. Humans is flawed. Flawed humans f up. Ain't no chart, no system, no marking, no anything gonna change that.
They be a reason they call them things "Accidents", cause they not intentional. They are unfortunate incidents. Generally they involve human error. Yeah a few have faulty car brakes or acceleration or crazy things and sometimes the plane crashes cause of defects, but not most of the time. Good drivers, bad drivers have accidents. The bad drivers normally have more, but they'd have even more if not for the good.
People can have a bazillion charts of paper, computer, even wood and stone, but still screw up. For future we try to figure it all out and how to not do it next time. People run into things they knew were there, they've been by dozens of times.
There's not a person here who has never made a mistake behind the wheel of a car or at a boat helm. Best protection is two people. Planes have co-pilots but still screw up. We do keep two of us watching in the boat, especially when entering areas or in crowded areas or new areas. A second set of eyes and second brain reduces the chance of human error dramatically. Other way of reducing odds of screw up is sobriety and plenty of sleep so they have energy and focus.
Oh, and we're shocked when robotic car wrecks? Duh.....who designed it? You got it. Humans.