Current design manuals provide guidance on how to design exit ramps to facilitate driving operations and minimize the incidence of crashes. They also suggest that interchanges should be built along straight roadway sections. These criteria may prove ineffective in situations where there is no alternative to terminals being located along curved motorway segments. The paper investigates driving behavior along parallel deceleration curved terminals, with attention paid to the difference in impact between terminals having a curvature which is the same sign as the motorway segment (i.e., continue design), and those having an opposite curvature (i.e., reverse design). A driving simulation study was set up to collect longitudinal and transversal driver behavioral data in response to experimental factor variations. Forty-eight drivers were stratified on the basis of age and gender, and asked to drive along three randomly assigned circuits with off-ramps obtained by combining experimental factors such as motorway mainline curve radius (2 values), terminal length (3), curve direction (2), and traffic conditions (2). The motorway radius was found to be significant for drivers’ preferred speed when approaching the terminal. Terminal length and traffic volume do not have a significant impact on either longitudinal or transversal driver outputs. However, the effect of curve direction was found to be significant, notably for reverse terminals which do not compel drivers to select appropriate speeds and lane change positions. This terminal type can give rise to critical driving situations that should be considered at the design stage to facilitate the adoption of appropriate safety countermeasures.

当前的设计手册为如何设计出口坡道提供了指导，以帮助驾驶操作并最大程度地减少撞车事故的发生。他们还建议，应沿直行车道路段建立交汇处。在没有其他选择可将终端沿着弯曲的高速公路路段放置的情况下，这些标准可能无效。本文研究了平行减速弯形终端的行驶行为，并注意弯曲度与高速公路路段相同的终端（即继续设计）和弯曲度相反的终端（即反向）之间的冲击差异。设计）。建立了驾驶模拟研究，以收集响应实验因素变化的纵向和横向驾驶员行为数据。根据年龄和性别对48位驾驶员进行了分层，并要求他们沿三个随机分配的路段行驶，并通过结合实验因素（例如高速公路干线弯道半径（2个值），终点长度（3个），弯道）获得了非斜坡方向（2）和交通状况（2）。人们发现，在接近终点站时，高速公路半径对驾驶员的首选速度具有重要意义。终端长度和交通量对纵向或横向驾驶员输出均无显着影响。然而，发现弯道方向的影响是显着的，特别是对于不强迫驾驶员选择合适的速度和换道位置的反向终端。