00933671

Component

https://doi.org/10.3141/1797-12

http://scholar.google.com...king&publication_year=2002

A variety of traffic-controlling devices are used in work zones; some of these are not normally found on the roadside or in the traveled way outside of the work zones. These devices are used to enhance the safety of the work zones by controlling the traffic through these areas. Because of the placement of the traffic control devices, the devices themselves may be potentially hazardous to both workers and errant vehicles. The impact performance of many work-zone traffic control devices is mainly unknown, and to date limited crash testing has been conducted under the criteria of NCHRP Report 350: "Recommended Procedures for the Safety Performance Evaluation of Highway Features." The results of full-scale crash testing of flexible panel work-zone sign stands were evaluated and analyzed to quantify the features that successful devices shared, as well as common features of those devices that failed salient safety criteria. Parameters considered included sign base and upright properties, sign height, cross-member properties, and ancillary details. Results pointed to three problematic, fundamental design issues: (a) combinations of base and upright stiffness and strength that generally lead to significant windshield damage, (b) cross members that lead to windshield damage in the end-on (90 deg) impact orientation, and (c) appurtenances that have an impact on performance. Although there are a significant number of variables that control the performance of a given device, these generalizations offer a basis for the evaluation of the fundamental design elements.

This paper appears in Transportation Research Record No. 1797, Hydrology, Hydraulics, and Water Quality; Roadside Safety Features 2002.

English

p. 96-104

2002

Transportation Research Record

0309077257

Figures (1) ; Photos (14) ; References (18) ; Tables (2)

Crash tests; Design; Loss and damage; Sign supports; Stiffness; Strength of materials; Windshields; Work zone traffic control

NCHRP Report 350

Impact angle

Design; Highways; Operations and Traffic Management; Research; I73: Traffic Control

TRIS, TRB, ATRI

Nov 8 2002 12:00AM

• ANALYSIS OF CLEAR-WATER SCOUR AT BRIDGE CONTRACTIONS IN COHESIVE SOILS
• ASSESSMENT OF NCHRP REPORT 350 TEST CONDITIONS
• ASSESSMENT OF NCHRP REPORT 350 TEST VEHICLES
• BOX-BEAM BURSTER ENERGY-ABSORBING SINGLE-SIDED CRASH CUSHION
• CLEAR-WATER ABUTMENT SCOUR PREDICTION FOR SIMPLE AND COMPLEX CHANNELS
• CRITICAL IMPACT POINTS FOR TRANSITIONS AND TERMINALS
• DEVELOPMENT OF THE MIDWEST GUARDRAIL SYSTEM
• FLARED ENERGY-ABSORBING TERMINAL MEDIAN BARRIER
• GEOSPATIAL DISTRIBUTION OF METAL ELEMENTS IN TRANSPORTATION LAND USE SURFICIAL SOILS
• IMPROVED TRUCK MODEL FOR ROADSIDE SAFETY SIMULATIONS: PART I--STRUCTURAL MODELING
• IMPROVED TRUCK MODEL FOR ROADSIDE SAFETY SIMULATIONS: PART II--SUSPENSION MODELING
• VEHICLE IMPACTS IN V-SHAPED DITCHES