Safety of freeway median high occupancy vehicle lanes: a comparison of aggregate and disaggregate analyses.
نویسندگان
چکیده
This paper addresses safety issues associated with High Occupancy Vehicle (HOV) lanes constructed along freeway medians, without physical separation from adjacent traffic. Data associated with operation of such an HOV facility in Southern California are analyzed relative to the pattern of accidents on the facility and the potential role of congestion. Detailed analyses of accident characteristics point out that potentially false conclusions regarding the safety of HOV lanes can be drawn from simple analyses that are based on aggregate measures of accident frequencies and assumed traffic volumes.
منابع مشابه
The Impacts of Allowing Hybrid Vehicles and Solo Toll-Paying Vehicles in Existing High-Occupancy Vehicle Lanes
This paper introduces a microscopic simulation method to investigate the operational effects of allowing single occupant hybrid vehicles and or toll-paying single occupant vehicles into HOV lanes. The demand methodology is based on disaggregate stated and revealed preference vehicle purchase models, and includes a flexible aggregation method for converting the household level predictions to agg...
متن کاملSafety of High-occupancy Vehicle Lanes without Physical Separation
This study addresses safety issues associated with the operation of freeway high-occupancy vehicle (HOV) lanes that are not'separated by physical barriers from adjacent, general-purpose traffic lanes. Accident frequencies and characteristics obtained from 14 months of operation of an HOV lane in the greater Los Angeles area, together with similar data for 6 years' prior to the opening of the la...
متن کاملAcquiring Travel Time and Network Level Origin - Destination
This paper assesses technologies that may be applicable for improving the effectiveness of high-occupancy vehicle (HOV) lane enforcement, and describes a test application that is being conducted on the East R.L. Thornton Freeway (I-30) Contraflow HOV Lane in Dallas, Texas. The Texas Transportation Institute has identified and investigated several technologies that potentially could improve the ...
متن کاملEvaluating Air Quality Benefits of Freeway High Occupancy Vehicle (HOV) Lanes in Southern California
In the past decade, a variety of questions have been raised concerning the effectiveness of high occupancy vehicle (HOV) lanes. In Southern California, HOV lanes evaluation studies have recently been conducted, justifying the effectiveness of HOV lanes in several ways. However, very little research has been performed in evaluating the air quality benefits of HOV lanes. In this paper, a study is...
متن کاملA Tool to Evaluate the Safety Effects of Changes in Freeway Traffic Flow
This research involves the development of a tool that can be used to assess the changes in traffic safety tendencies that result from changes in traffic flow. The tool uses data from single inductive loop detectors, converting 30-second observations of volume and occupancy for multiple freeway lanes into traffic flow regimes. Each regime has a specific pattern of crash types, which were determi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Accident; analysis and prevention
دوره 22 1 شماره
صفحات -
تاریخ انتشار 1990