What relevance does your individual sample-of-one statistic have to do with anything?
Most traffic safety laws are based on the fact that 100% of the people aren't going to be as careful and attentive as they should be 100% of the time.
The real question, which none of us seems to have solid statistics on, is this: What's the difference in accident rates between places and times where and when different safety regulations have been in effect?
If there's a statistically significant reduction in accidents with the "garish" reflectors these Amish don't like, then they should either have to use them anyway or stay off the roads. If other alternatives which these Amish will accept produce similar safety results, fine then, let them have their way.
If the actual freedom to believe and worship of these people were at stake, I'd be willing to accept even some deadly risk to stand up for their freedom. When the issue is helping to alleviate believers from the costs of their own self-imposed rules, however, and the cost to others is risk to life and limb, that's too much accommodation and facilitation.
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