45 tons. According to the query of Chongqing News, the heavy truck of Zhou Xiao Toll Station in Wanzhou, Chongqing cannot be overloaded by 45 tons at high speed. Chongqing Senior Management Office issued a notice that the total mass of all large trucks in the city should not be overloaded when driving on the expressway in this city. If there is any violation, we must resolutely deal with it in strict accordance with the relevant provisions of the Road Traffic Safety Law.