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Contents EXECUTIVE SUMMARY . PART I: OVERVIEW AND EUNDAMENTAL APPROACH THE HIGHWAY INDUSTRY ...................................................15 Characteristics of the Highway Industry, 15 Implications for Research, 21 2 HIGHWAY RESEARCH ACTIVITIES .........................................24 Origin of Highway Research, 24 Illustrative Accomplishments of Highway Research, 25 Current Context of Highway Research, 26 Major Highway Research Programs, 33 3 GAPS IN THE CURRENT SYSTEM OF HIGHWAY RESEARCH ............42 Big Payoffs, 43 Neglected Areas, 44 Organizational Barriers, 45 Usable Findings, 47 Large-Scale Projects, 47 Greater Integration of Effort, 49 National Policy, 51 Technological Change, 52 Safety and Environment, 52 Potential Research Areas, 53
PART II: POTENTIALLY PROMISING AREAS OF RESEARCH 4 ASPHALT........................................................................63 Program Evaluation, 64 Project Definition, 74 Research Objectives, 75 Project Organization, 76 Funding, 78 5 LONG TERM PAVEMENT PERFORMANCE.................................. 80 Program Evaluation, 82 Project Definition, 91 Research Objectives, 93 Program Administration, 94 Funding, 94 6 MAINTENANCE COST-EFFECTIVENESS..................................... 97 Program Evaluation, 98 Project Definition, 104 Research Organization, 105 Funding, 105 7 PROTECTION OF CONCRETE BRIDGE COMPONENTS .................. 107 Program Evaluation, 109 Project Definition, 114 Research Organization, 117 Funding, 117 8 CEMENT AND CONCRETE IN HIGHWAY PAVEMENTS AND STRUCTURES ........................................................... 119 Project Evaluation, 120 Program Definition, 128 Research Organization, 129 Funding, 130 9 CHEMICAL CONTROL OF SNOW AND ICE ON HIGHWAYS ............ 132 Program Evaluation, 133 Project Definition, 141 10 ALTERNATIVE INSTITUTIONAL ARRANGEMENTS ....................... 147 Organizational Requirements, 147 Organizational Options, 150 Summary, 160 11 CONCLUSIONS AND RECOMMENDATIONS ............................... 161 APPENDIX : Steering Committee Biographical Information ........... 165
