Intersection Design?
Intersection Design?
(OP)
Hello,
I am looking for information on offset intersections. The situation is that I have a main thrue highway and crossing roads centerlines are about 15m offset. I need to prove that the signalized intersection is either safe or unsafe for turning movements. Existing reg's?
Thanks!
I am looking for information on offset intersections. The situation is that I have a main thrue highway and crossing roads centerlines are about 15m offset. I need to prove that the signalized intersection is either safe or unsafe for turning movements. Existing reg's?
Thanks!





RE: Intersection Design?
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Intersection Design?
RE: Intersection Design?
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Intersections like A tend to have more problems, although concurrent phasing can be confusing for both. It's hard to tell what the other driver's intentions are.
If you can get a "B" setup with an offset of more than 200'or so, you are golden. You can run them as two three-leg intersections, and you don't need left-turn storage between the intersections. Sideraod through traffic doesn't get stuck on the main road waiting for a gap for a left turn.
ROW costs are likely to be higher than Zabrab's suggestion, but you may get safety and operational benefits. Unsignalized, it will be safer than a 4-leg.
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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: Intersection Design?
RE: Intersection Design?