Singumvelisi omkhulu wase China kunye nomzi mveliso woomatshini bokumakisha ezindleleni ezihamba ngokwazo. Ngokwedatha yamanani eenkcukacha zamazwe aphesheya, iingozi zendlela ziya kuncitshiswa ngaphezulu kwe-30% emva kokuba kwamkelwe imigca ye-convex, amaxhoba kunye nelahleko zoqoqosho zincitshiswe kakhulu. Ngenxa yoko iingcali zibhenela ekusetyenzisweni kolu hlobo lwamanqaku emgceni njengomgangatho oqhelekileyo wokhuseleko ezindleleni.