The Wichita
Eagle this morning had an article about the 75 MPH bill. Probably the most interesting and valuable part is the "How fast in the past" fact box:
http://www.kansas.com/2011/04/10/1801633/will-higher-speed-limit-mean-more.htmlSome of the information was new to me:
* The lack of a general speed limit on state highways before 1957 (not just the Turnpike)
* The reduction of the Turnpike speed limit in 1970 from 80 MPH to 75 MPH day/70 MPH night
* The 55 MPH zones on the Turnpike around Wichita and Topeka, 1987-1993 (the rest of the Turnpike was 65 MPH for most of this period)
* The jump in Turnpike speed limit from 55 MPH to 65 MPH in two steps in 1987 (Emporia-Topeka had to wait until the I-335 designation, which was not applied until after the Turnpike was already 65 MPH elsewhere)
I think, however, that the "reasonable and prudent" phrase is wrong. That is what derestriction was called in Montana, but in Kansas it was known as "reasonable and
proper."
Signing and delineation for the Turnpike in 1956, when it opened, was handled through just one contract, which had no provision for speed limit signs in the modern sense, or even signs to indicate the existence of a "reasonable and proper" basic speed rule. There were signs to indicate a 40 MPH
minimum speed. (I think these signs may have been later modified to add the 80 MPH maximum speed as an additional line above the existing legend.) The northern end of the Turnpike, near the 18th Street Expressway interchange, was a restricted speed zone with posted speed limits. The transition from the derestricted length was handled using "SPEED ZONE AHEAD" signing.