by U.S. Dept. of Transportation, Federal Highway Administration, Research and Development, Turner-Fairbank Highway Research Center in McLean, Va. (6300 Georgetown Pike, McLean 22101-2296) .
Written in English
|Other titles||Safety effects of cross section design on rural multilane highways|
|Series||HSIS summary report|
|Contributions||Turner-Fairbank Highway Research Center.|
|The Physical Object|
This paper presents a study of the effects of the various cross-section-related design elements on the frequency of accidents for rural, multi-lane, non-freeway roads. Data extracted from the Highway Safety Information System (HSIS) for four States were utilized for data exploration and descriptive analysis. effects of such pavement maintenance activities on highway safety and the most appropriate designs for improved roadways. Faced with upgrading the existing two-lane rural highway system, highway officials need accurate information on the relationships between accidents and various geometric and roadside Size: 9MB. Safety Effects of Horizontal Curve and Grade Combinations on Rural Two-Lane Highways CHAPTER 1—INTRODUCTION. This chapter presents an introduction to the report, including key background information for the research, research objectives and scope, and the organization of this report. The work completed here aimed to develop a set of recommendations to be used in evaluating safety implications from design element trade-offs. The effort focused on developing crash-prediction models and accident modification factors (AMFs) for multilane rural roads regarding lane width, shoulder width, and median width and type.
While the AASHTO HSM provides CMFs for the safety effects of horizontal curvature and percent grade on rural two-lane highways, it does not have any method for accounting for the interactions between these effects. Safety Impacts of Design Element Trade-Offs for Multilane Rural Highways Article in Journal of Transportation Engineering (5) May with 23 Reads How we measure 'reads'. Safety Effects of Shoulder Paving for Rural and Urban Interstate, Multilane, and Two-Lane Highways Article (PDF Available) in Journal of Transportation Engineering (10) October. 1 Road Type refers to rural two-lane highway, rural multi-lane highway, urban freeway, etc. 2 Road Characteristics includes physical features such as lane widths, access density, etc. 3 Traffic Volume is the ADT or AADT in vehicles per day. 4 Observed Crash Data represents the historic crash data at the study site for a period of more than one year (preferably 3 to 5 years).
Illinois RURAL TWO-LANE/MULTILANE STATE HIGHWAYS October HARD COPIES UNCONTROLLED TWO-LANE HIGHWAYS General The minimum design for a State route is a two-lane, two-way highway. A rural expressway is a high-speed, multilane, divided highway with partial access control. It is typically divided by a wide, depressed median and consists of both at-grade intersections and. However, there has been limited research on the safety effects of geometric design features on rural, multilane, nonfreeway highways. This study examined the effects of various cross-section-related design elements on accident frequency and developed an accident prediction model for rural, multilane, nonfreeway by: 1. chapter 9 highway design generalFile Size: 1MB.