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1、第二章2.5不考2-1.Adnivertakes3.2storeacttoacomplexsituationwhiletravelingataspeedof55mi/h.Howfardoesthevehicletravelbeforethedriverinitiatesaphysicalresponsetothesituation(Le.,puttinghisorhexfootonthebrake)?2-4.Driversmustslowdownfrom70mi/hto60mi/htonegotiateaseverecurv
2、eonaruralhighway.Awarningsignforthecurveisclearlyvisibleforadistanceof100ft.Howfarinadvanceofthecurvemustthesignbelocatedinordertoensurethatvehicleshavesufficientdistancetosafelydecelerate?UsethestandardreactiontimeanddecelerationraterecommendedbyAASHTOforbasicbrak
3、ingmaneuvers・2-5.Howlongshouldthe"yellow"signalbeforvehiclesapproachingatrafficsignalona2%downgradeataspeedof35mi/h?Useastandardreactiontimeof1.0sandthestandardAASHTOdecelerationrate.第三章书上题1~45—2•Atrafficstreamdisplaysaveragevehicleheadwaysof2.2sat50mi/h.Computethe
4、densityandrateofflowforthistrafficstream.5—3•Afreewaydetectorrecordsanoccupancyof0.255fora15・minuteperiod.Ifthedetectoris3.5ftlong,andtheaveragevehiclehasalengthof20ft,whatisthedensityimpliedbythismeasurement?5—4.Atagivenlocation,thespacemeanspeedismeasuredas40mi/h
5、andtherateofflowas1,600pc/h/1n.Whatisthedensityatthislocationfortheanalysisperiod?5-5・TheAADTforagivenhighwaysectionis25,000veh/day.Iftherouteisclassifiedasanurbanradialroadway,whatrangeofdirectionaldesignhourvolumeswouldbeexpected?5—6.Thefollowingtraveltimeswereme
6、asuredforvehiclesastheytraverseda2.0-milesegmentofhighway.Computethetimemeanspeed(TMS)andspacemeanspeed(SMS)forthisdata.WhyisSMSalwayslowerthanTMS?5-7.Thefollowingcountsweretakenonanintersectionapproachduringthemorningpeakhour•Determine(a)thehourlyvolume,(b)thepeak
7、rateofflowwithinthehour,and(c)thepeakhourfactor.Fromthisdata,determine(a)theAADT,(b)theADTforeachmonth,(c)theAAWT,and(d)theAWTforeachmonth.Fromthisinformation,whatcanbediscernedaboutthecharacterofthefacilityandthedemanditserves?Timeperiod1Volume8:00・&15AM8:15-8:30A
8、M1501551651608:30-8:45AM-8：45-9:00AM第四章4,・3~4・54.6~4.8不考72Traveltimedataiscollectedonanarterial,andwith3()runs,anaveragetraveltimeof152secondsisc
