Watching collisions from my window

Every day I hear people on bikes or cars crashing around a particular crossroad junction (which I can see from my window). At least 2 every day, if not more.

I can list many reasons for this phenomenon:

1. Drivers do not follow driving rules
2. Walkers do not practice traffic rules
3. There are no traffic instructions around that junction
4. People - drivers and pedestrians alike - do not have time to wait to slow down and manoeuvre
5. Youngsters and rich men like to drive real fast so that their bikes and cars can emit 'fart-like' sounds and make people pay them some attention
6. The space is densely populated

Now think about your office.