Quote:
Originally Posted by Angel And The Wolf
Yes, in 1978 the National Maximum Speed Limit was 55 mph. At 55, air can follow a more abrupt angle than at 75. I'm going with the 15 degree quote, rather than the 22 degrees that was OK in 1978.
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I'd be very interested in a source for such a metric. I've never encountered any citation in the professional literature which suggests that such a relationship exists for vehicles of the dimensions we're discussing.