to be warranted, 85thpercentile speed
to be primary consideration.
§Safety value of number
posted shall be fact based, with uniform application,
practice and expectation in the U.S. and its
§Method to determine
safety value: Comprehensive traffic engineering study
(safety audit) of particular roadway being regulated,
supervised by a licensed traffic engineer applying nationally
accepted and vetted practices, to be periodically reviewed (5
years or change in conditions on the particular roadway),
and it shall be documented.