考虑换道压力增益的高速公路分流区跟驰模型

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中图分类号：U491.265 文献标志码：A 文章编号：1000-582X（2025）08-040-14

doi：10.11835/j.issn.1000-582X.2024.005

Research on car-following model for freeway diversion area considering lane-changing pressure gain

YANG Longhai，CHE Tingting，MA Wenkui， ZHANG Xiqiao，CHEN Lin （School ofTransportation Science and Engineering，Harbin Institute ofTechnology，Harbin150o90，P.R.China）

Abstract： To more accurately capture vehicle-following behavior in freeway diversion areas，this study proposes anenhanced car-following model by incorporating a lane-changing pressure gain factor into the full velocity diference model （FVDM）.The proposed model accounts for both lane-changing pressure and lane-changing behavior. First，a linear stability analysis reveals that the stability region of the freeway diversion area diminishes as the lane-changing pressure gain factor increases.Second， using trajectory data from 92 lane-changing vehicles extracted from the NGSIM dataset，the improved car-folowing model is calibrated andvalidated.Simulation results demonstrate that the improved model more accurately reproduces vehicle speed and position.Compared with the original FVDM，the simulation error of the proposed pressure-based FVDM （P-FVDM） is reduced by 16% .Compared with the lane pressre FVDM（LP-FVDM），the proposed pressure-lane pressure FVDM（PLPFVDM） reduces error by 12% .Finally， the improved model is used to simulate trafc oscillation in the diversion area.Results show that lane changing behavior can trigger traffic oscilations.Higher driving speeds attenuate oscillation amplitudes，while lower speeds result in a concave growth patrn of speed standard deviation along the vehicle platoon in the upstream direction.Furthermore，lane changes occurring closer to the exit ramp exacerbate oscillations， whereas shorter lane-changing duration help suppress them.

Keywords： transportation engineering; car-following model; traffic oscilation; lane-changing pressure; freeway diversionarea;numerical simulation

“交通震荡"是一种车辆“走走停停"的现象[2]，对交通流的运行有严重的负面影响，如：燃料消耗加剧、有害气体排放量大、安全风险剧增、增加行车延误等。（剩余15023字）