What is the speed limit of Jiangxi Expressway?

1 00 km/h. According to relevant public information, the speed limit standard of expressway in Jiangxi Province has been adjusted since July 20 15,1:cars 120 km/h, trucks and large and medium-sized buses100 km/h. Speed limit usually refers to the speed within a certain numerical range for a certain length and distance. The main purpose is to remind drivers to control the speed reasonably in advance to prevent the danger of speeding in the subsequent sections ahead.