practical design reference?
practical design reference?
(OP)
Want to see something amusing? Watch a bridge guy and a traffic safety guy try to design a 3R project. Well, I bet it would be funny if you're not one of them. If it were a new alignment, it would be a lot easier.
What we need is a book of practical advice on what to do when AASHTO doesn't help. For example, we have a sideroad approaching on a right curve, and the main road is graded the other way. What is an acceptable rate of change for warping the curve super to meet the mainroad grade?
I should mention that the traffic volume (~550 - 850 vpd) doesn't warrant expensive fixes like realignment, and the budget doesn't allow it anyway.
What we need is a book of practical advice on what to do when AASHTO doesn't help. For example, we have a sideroad approaching on a right curve, and the main road is graded the other way. What is an acceptable rate of change for warping the curve super to meet the mainroad grade?
I should mention that the traffic volume (~550 - 850 vpd) doesn't warrant expensive fixes like realignment, and the budget doesn't allow it anyway.
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"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail."
Wm. Phelps Eno, ca. 1928





RE: practical design reference?
RE: practical design reference?
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"...students of traffic are beginning to realize the false economy of mechanically controlled traffic, and hand work by trained officers will again prevail."
Wm. Phelps Eno, ca. 1928
RE: practical design reference?