There is a huge gap between car speeds (traveling at 65 to 75 mph) and truck speeds (traveling at 55 mph) in the state of California on the state highway systems. Sometimes the speed difference between large trucks and smaller vehicles can exceed 15 to 25 mph. This is something that I have personally experienced.

I would like to propose that truck speeds be set at about 65 mph, similar to other states. Incomparison if you are traveling on I-40,  I-10, I-80 same highway enters CA and there aren't major differences between road conditions yet speed drops from 75 to 55 making drivers sleepy and fatigued. Even OR now has 60 speed limit for Trucks though OR I-5 has more curves and pupulation along its sides then CA. Most accidents in CA happens due to Fatigued driving not Speed by increasing Speed limit it will help reduce fatigued driving by expedite load delivery.  Currently at 55 mph, drivers have to spend more time on the roads, taking longer to deliver loads thus increasing fatigue and load rates (due to fewer load deliveries). I firmly believe that this slight increase in truck speed from 55 mph to 65 mph would increase safety, reduce load time turn arounds, reduce fatigue, increase truck driver salaries and increase overall production.

IF YOU CHECK BUSES TRAVELING AT 70 MPH are more dangerous then trucks as BUSES ARE FULL OF DISABLE PERSONS, CHILDREN, PREGNENT WOMEN yet they don't have to follow 55 MPH why ? Anyone have answer ? 

One suggestion can be that in rural area truck speeds can be increased from 55 mph to 65 mph. While in densely populated areas the truck speed limits can be left at 55 mph