TULSA, Okla. (AP) — An Oklahoma Transportation Authority engineer is hoping an odd speed limit will get the attention of drivers, and slow them down in construction zones.

Jarry Slaughter has posted speed limit signs of 17 miles per hour at three toll plazas that are under construction at Stroud, Vinita and Afton.

[S]ome Roads Scholar working the exits up in the northeast has come up with a new wrinkle: the speed limit just beyond the Afton/Vinita exit from the Will Rogers Turnpike is 17 mph. I guess this is as fast as you can go and still get the attention of Baron von Tollbooth.