That would make a great study.

PIck a corner that has a high crash rate.
Allow no photogs, no sexy wimmens as bystanders, watch the crash rate.
Bring in Photogs, watch the crash rate.
Ditch photogs, bring in some hotties standing around, watching & waving,
bikini clad recommended, watch crash rate.
Bring in photogs, keep the hotties. watch the crash rate,,

Of course, someone has to count the bikes on the road for each day.
Probably be good to know the type of bike involved in crashes & the counts should include types of bikes.Rotch Crocket, Cafe, Cruiser, bagger