Quote Quoting adam_
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"fairly simple"?

Any shred of data to support your statement that visually estimating headlight speeds in total darkness is 'fairly simple'?

If I was interested, I bet I could find publications on this issue. But I'm not the one that got the ticket.

Can I say it's fairly simple? Is that credible enough? Or are the millions of previously issued night time radar citations, which require visual estimation good enough?