TexasCHLforum.com

Here's an interesting "article"

http://en.wikipedia.org/wiki/Speed_limits_in_Texas" onclick="window.open(this.href);return false;

Keith B wrote:

The Annoyed Man wrote:Isn't there some state statute somewhere which says something to the effect that "unless otherwise posted, the maximum speed limit permitted in the state of Texas is XX mph?" I know that Texas isn't California, but California has (or had) some similar type of statute which set a default maxium speed limit anywhere in the state.

Yep, it's here http://info.sos.state.tx.us/pls/pub/rea ... h=25&rl=21" onclick="window.open(this.href);return false;

However, I believe the Tollway Authority can set the speed on their roadways as long as the follow the guidelines established for other highways

(J) The authority of regional tollway authorities, regional mobility authorities, and the Commanding Officer of a United States Military Reservation to alter the speed limits are addressed in Transportation Code, §§370.033, 545.354, and 545.358. These decision making authorities are required to follow the speed zone procedures adopted by the department when altering, on the basis of an engineering and traffic study, speed limits on off-system turnpikes or on-system highways within the confines of a military reservation.

So, I would say since the rest of the tollway is 70, that would be the prima facie speed for the unposted secitons

There is also a law [in California] that you can't drive at a speed that is not safe so you can still get a ticket for violating a prima facie speed limit if the officer believes that there are extenuating circumstances such as low visibily [rain or fog], heavy traffic, workers present, etc.

In California, road surveys have to be done every so many years to allow enforcement of certain speed limits. I went to traffic school for a ticket in California and the instructor, a CHP officer, said that finding the road survey was out of date was one certain way to get the judge to dismiss the ticket. As TAM stated, this is for California, so it may not apply in the Great State.