The fixed-point speed limit at 2496+200m of Daguang Expressway in Hubei Province is between 20% and 50%. What is the speed limit here?

201310/kloc-0 returned to Guangzhou on October 6, where I was hacked. I drive carefully. It's probably the fast lane 100 yards, and the middle 80 yards were cheated after a while. Deduct 200 yuan once, 6 points. In addition, my friend who came back all the way was also punished here, more than 20 seconds apart. I feel that I am deliberately generating income. Appeal not to take the Daguang Line (the reason is that the speed limit in Jiangxi and Hubei is 100 and it is basically two lanes, so you can't run, which loses the meaning of high speed).