OK, the guy who wears his helmet to drive to the ride would be definition 1 under 'dork'.
At my job, we have definition about, I'd say, 4.
We are REQUIRED to wear hi-viz vests when operating the electric 'cherry picker' on the sales floor at work -- as if the bright yellow machine the size of a Goodwill donation station box that BEEPS as it moves in ANY direction would be hard to spot, and that the vests will make the difference in that equation.
We call 'em 'dork vests'. And no, they don't help. Idiots couldn't possible be more self-absorbed....