A Review of Breakaway Supports for Small Signs and Mailbox Installations
A Review of Breakaway Supports for Small Signs and Mailbox Installations

Author: Jon Conrad Vogel

Publisher:

Published: 1998

Total Pages: 238

ISBN-13:

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For many years, the Nebraska Department of Roads (NDOR) installed two types of crashworthy mailbox support systems alongside their state highways. The breakaway support systems consisted of the Eze-Erect sign support system manufactured by Franklin Steel Company and the V-LOC socket support system manufactured by Foresight Products Inc. In 1994, the Franklin Steel Company went out of business, the patent period of the Eze-Erect system expired, and the Eze-Erect system became unavailable. The objective of this research project was to either identify new sources of low-cost, small sign and mailbox supports or, if necessary, develop a new support system as a replacement to the Eze-Erect system to meet the safety standards provided in the National Cooperative Highway Research Program (NCHRP) Report No. 350, "Recommended Procedures for the Safety Performance Evaluation of Highway Features" and the American Association of State Highway and Transportation Officials (AASHTO) "Standard Specifications for Structural Supports for Highway Signs, Luminaires, and Traffic Signals". An extensive literature review was performed on existing small sign and mailbox supports available from several manufacturers located in the United States, including those that have been crash tested. A summary was provided on each of the Pooled Fund member states' standards for addressing mailbox supports. The research results revealed that several crashworthy, small sign and/or mailbox supports are available from manufacturers and suppliers, consisting of round pipe, square tubing, U-channel geometries as well as several wood post options. Therefore, it was not necessary to develop, test, and evaluate a new support system

Cost Effectiveness of Small Highway Sign Supports
Cost Effectiveness of Small Highway Sign Supports

Author: Hayes E. Ross

Publisher:

Published: 1980

Total Pages: 20

ISBN-13:

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Summarized are the results of a study entitled "Cost Effectiveness of Small Highway Sign Supports." The basic purpose of the study was to develop objective criteria and methodologies to assist the engineer in the selection of a cost-effective sign support system. To accomplish this objective, four tasks were required. These were (1) survey existing practices, (2) evaluate the crashworthiness of widely used support systems and promising new systems, (3) develop methodologies whereby candidate systems could be evaluated on a cost-effective basis, and (4) to the extent possible, identify the relative cost-effectiveness of current systems.

Roadside Design Guide
Roadside Design Guide

Author:

Publisher: Amer Assn of State Hwy

Published: 1996-01-01

Total Pages: 352

ISBN-13: 9781560510314

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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."

Road Safety Audit for Union County IA 25 from the WCL of Creston to North H-24 Intersection
Road Safety Audit for Union County IA 25 from the WCL of Creston to North H-24 Intersection

Author: T. H. Maze

Publisher:

Published: 2008

Total Pages: 50

ISBN-13:

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In April 2008 a preliminary investigation of fatal and major injury crashes on Iowa's primary road system from 2001 through 2007 was conducted by the Iowa Department of Transportation, Office of Traffic and Safety. A mapping of these data revealed an apparent concentration of these serious crashes on a section of Iowa 25 north of Creston. Based on this information, a road safety audit of this roadway section was requested by the Office of Traffic and Safety. Iowa 25 is a two-lane asphaltic concrete pavement roadway, 22 ft in width with approximately 6 ft wide granular shoulders. Originally constructed in 1939, the roadway was last rehabilitated in 1996 with a 4-in. asphalt overlay. Except for shoulder paving through a curve area, no additional work beyond routine maintenance has been accomplished in the section. The 2004 traffic map indicates that IA 25 has a traffic volume of approximately 2070 vehicles per day with 160 commercial vehicles. The posted speed is 55 mph. This report contains a discussion of audit team findings, crash and roadway data, and recommendations for possible mitigation of safety concerns for this roadway section.