I do not use case studies to attack, ridicule, or otherwise demean anyone who may have been involved in an actual incident. Instead, I am simply trying to demonstrate the concepts and theories that we have been discussing over the past few months in a real-life environment.

To understand how curve advisory speeds are calculated, we need to understand several issues related to road design. Keep in mind that this article is not meant to be an engineering class. Instead, we will touch on a few keys points and discuss curve advisory speeds in simple terms.

While most of these procedures are justified and useful, some are not. What is common among many of them is the fact that no one knows where they came from. The only background or justification for such a rule is the fact that “an old guy told me to.”