I bought my Dinotte 140L after thinking about what the PBSF would look like in fog.
I used to run an amber strobe in the back; I don't even really think the Dinotte 140L is quite enough for heavy fog. It would be if people drove sanely, but once in a while you get the moron doing 50 with 10 feet of visibility.
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Work: the 8 hours that separates bike rides.