00495138

Component

http://onlinepubs.trb.org...trr/1989/1233/1233-008.pdf

https://scholar.google.co...Hott&publication_year=1989

This paper describes the validation of a surrogate vehicle for luminaire-support testing. The history of surrogate vehicle development is briefly recounted, and a proposed validation process is discussed in detail. Four levels of validation are described. Level 1 relates force-deflection characteristics between the surrogate and an actual automobile, while level 2 considers velocity-change comparisons. Level 3 focuses on crush-length comparisons, where the concept of normalized crush is introduced. Finally, level 4, the highest level of validation, is based on physical-modeling comparisons. For the purposes of evaluation of luminaire supports and sign posts, it is suggested that validation of a surrogate at levels 1 and 2 only is sufficient to meet the requirements of the American Association of State Highway and Transportation Officials (AASHTO) specifications. Test results are then presented for the new surrogate vehicle, being used by the Federal Highway Administration (FHWA), when impacting luminaire supports mounted on different types of bases. The FHWA surrogate is shown to be validated for evaluation of the breakaway performance of luminaire supports mounted on either transformer bases or couplings. Not only is validation achieved for levels 1 and 2, but also partially for level 3 and level 4. It is recommended that the proposed validation technique be reviewed by the highway research community and considered for future validation of surrogate vehicles. Further, it is recommended that the breakaway bogie, developed under research sponsored by the FHWA, be accepted by the roadside safety community for use in evaluating breakaway luminaire supports.

This paper appears in Transportation Research Record No. 1233, Design and Testing of Roadside Safety Devices. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

00620476

p. 74-84

1989

Transportation Research Record

0-309-05005-7

Figures (5) ; Photos (10) ; References (5) ; Tables (4)

Acceptance tests; Automobiles; Breakaway supports; Car trucks (Railroads); History; Luminaires; Recommendations; Specifications; Structural supports; Validation

Design; Highways; History; Railroads; Research; Safety and Human Factors; I85: Safety Devices used in Transport Infrastructure

TRIS, TRB, ATRI

Jun 30 1990 12:00AM

• APPLICATIONS OF BARRIER VII IN DESIGN OF FLEXIBLE BARRIERS
• CASE STUDY: POLES IN THE URBAN CLEAR ZONE
• COMPUTER-BASED METHODOLOGY FOR THE GENERALIZED DESIGN OF THE CONNECTICUT IMPACT ATTENUATION SYSTEM
• CONNECTICUT NARROW HAZARD CRASH CUSHION
• DEVELOPMENT OF A SLOTTED-RAIL BREAKAWAY CABLE TERMINAL
• DEVELOPMENT OF AN IMPROVED HIGHWAY-VEHICLE-OBJECT-SIMULATION MODEL FOR MULTI-FACED RIGID BARRIERS
• DEVELOPMENT OF GUARDRAIL EXTRUDER TERMINAL
• DEVELOPMENT OF KANSAS GUARDRAIL TO BRIDGERAIL TRANSITION DESIGNS USING BARRIER VII
• FIELD STUDY TO ESTABLISH TRUCK ESCAPE RAMP DESIGN METHODOLOGY
• HIGH CONTAINMENT STEEL BRIDGE PARAPET WITH TRANSITION TO A SAFETY FENCE
• IMPROVED METHOD FOR DETERMINING VEHICLE AND OCCUPANT KINEMATICS IN FULL-SCALE CRASH TESTS (WITH DISCUSSION AND CLOSURE)
• MOVABLE CONCRETE MEDIAN BARRIER RISK ANALYSIS
• PREDICTION OF ROLLOVERS CAUSED BY CONCRETE SAFETY-SHAPE BARRIERS
• SURVEY OF STATE UTILITY MANUAL CLEAR ZONE PROVISIONS
• VEHICLE IMPACT TESTING OF LIGHTWEIGHT LIGHTING STANDARDS