摘要：AbstractIn order to find the operational characteristics of diverging area on expressway off-ramp with Vehicle Type Restricted Strategy(VTRS) and Vehicle Type Unrestricted Strategy(VTUS) in different lane, this paper analyzed the distribution of vehicle type in the each lane, in use of the data which is investigated from diverging area on the two expressway off-ramp with different operational strategy of lane. Furthermore, theχ2 test technology was used to do the hypothesis test on the headway distribution. The result shows that the shift-negative- exponential distribution can well reflect the headway distribution of deceleration lane, and the first-order or thesecond-order Erlang distribution can well reflect the headway distribution of mainline. Finally, the conclusion can provide an important theoretical basis for the freeway off-ramp planning, designing, and management.
关键词：Expressway Off-Ramp;Diverging Area;Operational Strategy of Lane;Headway
