Guidance for the Selection, Use, and Maintenance of Cable Barrier Systems


Book Description

This report provides guidance for the selection, use, and maintenance of cable barrier systems. While cable barrier systems have been in use for more than 70 years, their use has been on the rise and is expected to continue in the future. The increase in use of cable barrier systems has been attributed to the success rate in keeping vehicles from crossing the median, reducing roadway departures, and decreasing impact severity. Due to advancements in cable barrier system technology, installation and repair costs are lower and cable barrier use has increased in varying roadway environments. Safety studies, although limited, have shown that cable barriers help reduce those median cross-over collisions that lead to some of the most severe head-on type crashes. This document will be of particular interest to design, maintenance, traffic, and safety engineering professionals.




Hydrology, Hydraulics, and Water Quality


Book Description

Transportation Research Record contains the following papers: Environmental impact of runoff from highway construction and repair materials : project overview (Huber, WC, Nelson, PO, Eldin, NN, Williamson, KJ and Lundy, JR); Results of California Department of Transportation litter management pilot study (Lippner, G, Johnston, J, Combs, S, Walter, K and Marx, D); Environmental impact of construction and repair materials on surface water and groundwater : screening and evaluation methodology (Nelson, PO, Williamson, KJ, Azizian, MF, Thayumanavan, P, Huber, WC and Eldin, NN); Environmental impact of construction and repair materials on surface water and groundwater : detailed evaluation of waste-amended highway materials (Thayumanavan, P, Nelson, PO, Azizian, MF, Williamson, KJ and Lundy, JR); Characteristics of storm-water runoff from highway construction sites in California (Kayhanian, M, Murphy, K, Regenmorter, L and Haller, R); Estimation and internet-based dissemination of extreme rainfall information (Durrans, SR and Brown, PA); Step-pool morphology in high-gradient countersunk culverts (Maxwell, AR, Papanicolaou, AN, Hotchkiss, RH, Barber, ME and Schafer, J); Consideration of stream morphology in culvert and bridge design (Kosicki, AJ and Davis, SR); Compliance testing of a bullnose median barrier system : NCHRP report 350 (Bielenberg, BW, Reid, JD and Faller, RK); Washington State cable median barrier (Albin, RB, Bullard, DL and Menges, WL); W-beam guardrail adjacent to a slope (Polivka, Ka, Faller, RK, Sicking, DL and Rohde, JR); Improvements to the weak-post w-beam guardrail (Ray, MH, Engstrand, K, Plaxico, CA and McGinnis, RG); Three-strand cable median barrier in North Caroline : in-service evaluation (Hunter, WW, Stewart, JR, Eccles, KA, Huang, HF, Council, FM and Harkey, DL); Selection of roadside safety barrier containment level according to European Union standards (Montella, A); Unreported collisions with post-and-beam guardrails in Connecticut, Iowa, and North Carolina (Ray, MH and Weir, JA); Performance of w-beam splices (Ray, MH, Plaxico, CA and Engstrand, K); Development of two test level 2 bridge railings and transitions for use on transverse glue-laminated deck bridges (Faller, RK, Rosson, BT, Ritter, MA, Keller, EA and Duwadi, SR).







Roadside Design Guide


Book Description

This document presents a synthesis of current information and operating practices related to roadside safety and is developed in metric units. The roadside is defined as that area beyond the traveled way (driving lanes) and the shoulder (if any) of the roadway itself. The focus of this guide is on safety treatments that minimize the likelihood of serious injuries when a driver runs off the road. This guide replaces the 1989 AASHTO "Roadside Design Guide."




Median Cross-section Design for Rural Divided Highways


Book Description

"TRB's National Cooperative Highway Research Program (NCHRP) Report 794: Median Cross-Section Design for Rural Divided Highways provides guidelines for designing typical cross-sections for medians on new and existing rural freeways and divided highways."--Publisher's description.




Comprehensive Costs of Highway-Rail Grade Crossing Crashes


Book Description

"TRB's National Cooperative Highway Research Program (NCHRP) Report 755: Comprehensive Costs of Highway-Rail Grade Crossing Crashes describes a process for estimating the costs of highway-rail grade crossing crashes. A spreadsheet-based tool to facilitate use of the cost estimation process is available online." --Publisher description.




Thin and Ultra-thin Whitetopping


Book Description

TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 338: Thin and Ultra-Thin Whitetopping summarizes available information to document how state departments of transportation and others are currently using thin and ultra-thin whitetopping overlays among various pavement rehabilitation alternatives. The report covers all stages of the proper application of whitetopping overlays, including project selection, design, materials selection, construction, maintenance, and eventual rehabilitation or replacement.