高速公路速度限制方法研究.pdf

1、湖南大學碩士學位論文高速公路速度限制方法研究姓名：覃周申請學位級別：碩士專業(yè)：交通運輸規(guī)劃與管理指導教師：李碩20100501碩Ij學位論文AbstractWiththerapidsocialandeconomicdeVelopmentinChina，thefreewaysinChinaareplayingamoreandmoreimportantroleinthetransportationsystemThedemandsofpass

2、engersandfeightstransportationbyhighwaysareconstantlyrisinginrecentyearsSpeed—limitshaVebeenwidelyusedasawaytobalancebetweenthesafetyandoperationalefnciencyoffreewaysanoVertheworldAtpresent，themainproblemofspeed—limitson

3、freewaysishowtosetthestandards，themethodsandtherelatedfacilitiesforspeedlimitsonfreewaysandtheresearchonthisneldhasnotbeenadequatelydoneBasedontheanalysisoffreewaysinChinaandtheresearchonspeed—limitsforfreewaysathomeanda

4、broad，combiningwiththestateoftheartinspeedlimitonfreewaysinChinaandoVertheworld，theoutcomesofthisresearchareconcludedasflollows：(1)Theconceptsofthedesignedspeed，theexpectedspeed，theoperatingspeedandthespeedlimitarediscus

5、sedTherelationshipsamongthedesignspeed，theexpectedspeed，theoperatingspeedandthespeedlimitarestudiedindetailItisunscientificandunreasonabletousethedesignedspeedasthestandardoftheactualspeedlimitforfreewaysTheoperatingspee

6、dplaysthemostimportantroleintheresearchofspeed—limitsforfreewaysBasedontheimpactoftherelationshipstudiesbetweentheoperatingspeedandthetramcaccidents，thisthesispointsoutthatthehigherdiserepancyofoperatingspeedswouldleadto

7、ahigherrateoftrafficaccidents，andtheabsolutehigheroperatingspeedwouldleadtomoreseriousaccidents(2)Themethodsfordeterminingtheoperatingspeedonthefreewayarestudiedindetail，includingthemethodofneldobserVation，themethodofdet

8、erminingtheoperatingspeedbasedontheHIGH、7礦AYSpecifications，therelationalmodeIBetweenoperatingspeedandCCRs，andthe—％辦wc砂S(矽毫秒P廠巧PcfEV口，“口，fD甩G”f(據(3)TakeChangzhangFreewayasanexampleThereJatjonshipmodelsbetweenoperatingspee

9、dandCCRsforsmallcarandlargecarareestablishedThemodelsf0roperatingspeedof日fg辦wc吵i蜘紗P，巧PcfEV口，甜口，fD擰G“fdParemodified(4)TheprinciplesofformulatespeedlimitstandardsforfreewayareproposedChangzhangfreeway’sspeedlimitstandardsi