交通流理论03知识教育.pdf

交 通 流 理 论 姚荣涵姚荣涵 副教授副教授 大连理工大学 交通运输学院 2014 年02 月—2014 年04 月 8 无信号交叉口理论 22 CalibratingCalibrating PassengerPassenger CarCar EquivalentsEquivalents P: passenger car  T:T: trucktruck B: bus RV: recreational vehicle 33 CalibratingCalibrating PassengerPassenger CarCar EquivalentsEquivalents  The heavy-vehicle adjustment factor is the most significant in converting a demand volume under prevailingprevailing conditionsconditions toto aa flowflow raterate inin equivalentsequivalents underunder base conditions.  TwoTwo typestypes ofof vehicle:vehicle: passengerpassenger carscars, heavyheavy vehiclesvehicles P-P: passenger car following a passenger car PP--H:H: passengerpassenger carcar followingfollowing aa heavyheavy vehiclevehicle H-P: heavy vehicle following a passenger car HH-H:H: heavyheavy vehiclevehicle followingfollowing aa heavyheavy vehiclevehicle 44 CalibratingCalibrating PassengerPassenger CarCar EquivalentsEquivalents vvph 1 ff HVHV ,, ff HVHV v 1P (E 1) pce H H    vv  p ce 1      vvph    E 1 H  PP   H      3600 3600 , v v pce h vph h aPP a 2