Another most important safety piece are wrap-around sunglasses. Get the dorkiest ones you can find that don't just clear your peripheral vision, but more importantly, clear your peripheral vision when looking as far to the side as you can.

The mind does strange things. If something is blocked from view, you think there is nothing there.... example: I broke off a motorcycle mirror, went several days without it, and every single time I went to change lanes, I looked where there was no longer a mirror, and my brain said there was no car behind me in the other lane. EVERY time mid-lane change I would remember that I didn't see a car because there was no mirror!!!

Get waaaay wrap-around glasses, I'm experiencing the same effect with my non-wrap-arounds as the mirror!