公路2023年4月第4期HIGHWAYApr.2023No.4基金项目:省“万人计划”青年拔尖人才发展专项,项目编号QT-21011.01收稿日期:2022-05-19■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■■resultsshowthatwhenthevehiclelateraloffsetfluctuatesgreatly,sideslipisveryeasytooccur;thecriticalspeedcalculationmodelestablishedhashighreliabilityforthecriticalspeedcalculationofsmallradiusramps;thecriticalspeedoftruckhassaturationphenomenon,thatis,whentheroadfrictioncoefficientisgreaterthan0.55,thecriticalspeedoftruckwillnotchangesignificantly;andwhentheroadfrictioncoefficientislessthan0.45,thecriticalconditionofthetruckissideslip.Whentheroadfrictioncoefficientisbetween0.45-0.55,thecriticalconditionofthetruckwillchangefromsidesliptoinclination.Thevehicleroadcooperativedynamicspeedlimitschemecanlimitthespeedunderdifferentweatherconditionsandcontrolthespeedlimitdifferencewithin30km/h.Keywords:trafficengineering;smallradiusramp;CarSim/Trucksimsimulation;criticalspeedcalculationmodel;criticalconditions;vehicle-roadcooperativespeedlimit文章编号:0451-0712(2023)...