Affiliation:
1. Texas Transportation Institute, Texas A&M University System, College Station, TX 77843-3135.
Abstract
This paper describes the development and calibration of a curve speed prediction model. The model includes variables for curve radius, deflection angle, superelevation rate, and tangent speed. The model is based on the hypothesis that drivers modify their side friction demand because of a desire for both safe and efficient travel. One model component reflects a general desire by motorists to have lower side friction demand on higher speed curves. This trend likely reflects the driver's desire to maintain an acceptable margin of safety against sliding out or rolling over. A second model component reflects a willingness by drivers to tolerate slightly higher side friction demand on sharper curves in an effort to minimize the amount of speed reduction. The increase in side friction demand that a driver accepts is found to be proportional to the energy required to slow the vehicle to the curve speed.
Subject
Mechanical Engineering,Civil and Structural Engineering
Cited by
16 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献