Functional Requirements of Highway Safety Features |
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| VH48-A: Functional Requirements of Highway Safety Features (1989) Duration: 24:29 The first in a series that demonstrates proper installation and maintenance of highway safety features and describes how they function, this introductory video outlines the course through clips from the each segment of the series: Introduction and Clear Zone Concept; Standard Barriers; End Treatments and Transitions; Pavements and Shoulders; Drainage Structures; Breakaway Supports; Crash Cushions; Roadside Cross Section; Signing, Marking and Delineation. Download Functional Requirements of Highway Safety Features from The Internet Archive | |
| VH48-B: Introduction and Clear Zone Concept (1989) Duration: 28:39 This tape introduces the Functional Requirements series and the clear zone concept, stressing removal, relocation, retrofitting and shielding. The desired clear zone width is explained and reviewed. Removal of trees and other roadside hazards, treatment of culvert ends and other objects within the clear zone, and maintenance of embankment slopes are covered. Proper maintenance of breakaway signs and crash cushions are also shown. Slope test footage shows the functional reasons for clear zone widths, and continual routine maintenance of the clear zone is emphasized. Download Functional Requirements of Highway Safety Features: Introduction and Clear Zone Concept from The Internet Archive | |
| VH48-C: Standard Barriers (1989) Duration: 45:58 Installation, maintenance and repair of roadside barriers, end barriers and bridge rails are shown in a series of short videos within this video. Segments provide an overview of barrier components and their importance, and describe proper handling of standard sections of strong-post w-beam wood barriers, box beam barriers, concrete barriers and cable barrier systems. Download Functional Requirements of Highway Safety Features: Standard Barriers from The Internet Archive | |
| VH48-D: End Treatments and Transitions (1989) Duration: 44:00 Oklahoma Department of Transportation. Proper installation and maintenance are shown for four end treatment types: breakaway cable, flared and buried, twisted and turned down, and the Sentre end treatment. The video opens with an overview of barrier end treatments and the criteria for selecting an end treatment type, and demonstrations show how end treatments work under impact. Next, guardrail-to-bridge rail transitions and stiffening of barrier sections are described, with explanations of the necessity of transitions and the key elements of transitions. Bridge rail and transition crash tests are shown in another video segment. Download Functional Requirements of Highway Safety Features: End Treatments and Transitions from The Internet Archive | |
| VH48-E: Pavements and Shoulders (1989) Duration: 33:21 The functional requirements of pavements and shoulders are described, beginning with the elements of pavements and shoulders and the characteristics that contribute to poor performance. Skid resistance, measurement of pavement friction and polishing aggregates are discussed, along with drainage and vehicle steering factors. Tining, grooving, edge drop-off, roughness, and rutting are also covered. Shoulder types are described and their functions are outlined. Design requirements for shoulder width, strength, cross slope, joint, and contrast are described. Wet weather accidents are shown in a short video segment. Download Functional Requirements of Highway Safety Features: Pavements and Shoulders from The Internet Archive | |
| VH48-I: Roadside Cross Section (1989) Duration: 24:21 This video identifies roadside slopes and ditch shapes that affect vehicle safety, describes alternative safety treatments, and demonstrates proper construction and maintenance. The effects of grade, hinge point location, and obstructions are shown. Ditch shape is emphasized. Culverts and pavement drop-offs are also discussed. Download Functional Requirements of Highway Safety Features: Roadside Cross Section from The Internet Archive | |
| VH48-J: Signing, Marking, and Delineation (1989) Duration: 41:55 This video stresses clarity and consistency in traffic control devices through adherence to the standards established in the MUTCD and the establishment of local traffic sign maintenance management programs. Sign inventory, evaluation, and replacement scheduling are presented in a brief video segment. Longitudinal and lateral placement of signs, sizing, visibility, and appropriateness of the message are discussed. Types and placement of pavement and object markings are also shown. Download Functional Requirements of Highway Safety Features: Signing, Marking, and Delineation from The Internet Archive |