These are the Transportation Research Circulars available in the LTRC-TTEC Library:
The more recent publications are also available electronically online. Those items may be found at http://www.trb.org/Publications/PubsTransportationResearchCirculars.aspx
| Number | Title | Publ Year |
| 174 | Progress Report on Maintenance and Operations Personnel | Dec 1975 |
| 176 | Evaluation of Methods of Identifying Phases of Cement Paste | Jun 1976 |
| 184 | Parking Revenue Control | 1977 |
| 189 | 19 | |
| 192 | Summary : Second International Skid Prevention Conference | Feb 1978 |
| 193 | Driver Visibility Under Varying Adverse Weather Conditions | Mar 1978 |
| 194 | Research Problem Statements | Apr 1978 |
| 195 | State of the Art in Transportation Applications of Subsurface Nuclear Moisture and Density Measurements | Apr 1978 |
| 196 | The Interdisciplinary Approach in Transportation Planning and Design | Oct 1978 |
| 197 | The Role of the State Highway Safety Agency in Managing a State's Highway Safety Program : Criteria for Performance and Success | Dec 1978 |
| 198 | Progress Report of the Committee on Maintenance and Operations Personnel | Jan 1979 |
| 199 | Transportation and Land Development --- Transportation and Urban Land Policy in Developing CountriesBr /> --- Metropolitan Region Transportation Planning : A New Era and New Directions |
Feb 1979 |
| 200 | Research Needs in Inland Water Transportation | Mar 1979 |
| 201 | Summary : Bridge Engineering Conference | Mar 1979 |
| 202 | Solving the Airport Auto Parking Problem | Mar 1979 |
| 204 | Engineering Fabrics, A Literature Review (1978) | Apr 1979 |
| 207 | Research Problem Statements in Hydrology, Hydraulics, and Quality | Jun 1979 |
| 208 | Curing of Concrete Pavements | Jun 1979 |
| 209 | Local Rail Services Program : Perspectives of States and Railroads | Aug 1979 |
| 210 | Research Problem Statements | Sep 1979 |
| 212 | Interim Materials on Highway Capacity | Jan 1980 |
| 213 | Bibliography on Project Evaluation and Priority Programming Criteria | Jan 1980 |
| 214 | Low-Volume Roads : Second International Conference : Addresses and Research Needs | Jan 1980 |
| 215 | Progress Report on Maintenance and Operations Personnel | Jan 1980 |
| 216 | Transportation of Energy Materials | Apr 1980 |
| 217 | Research Problem Statements | Apr 1980 |
| 218 | State Highway Finance | Apr 1980 |
| 219 | The Ten Most Critical Issues in Hazardous Materials Transportation | Jul 1980 |
| 220 | Forces Influencing International Air Travel To and From North America | Aug 1980 |
| 221 | Impact on Air Transportation Operations and Maintenance Research From Loss of Cab Data Via Deregulation | Sep 1980 |
| 222 | Highway Visibility Research Needs | Oct 1980 |
| 223 | Progress Report on Maintenance and Operations Personnel | Nov 1980 |
| 224 | Utility Poles | Dec 1980 |
| 225 | Impact of Airline Fare Reductions of 1978 | Mar 1981 |
| 226 | Research Problem Statements in Landscape and Environmental Design | Apr 1981 |
| 227 | Research Problem Statements | Apr 1981 |
| 228 | Energy Considerations in Fixed and Vehicular Lighting | May 1981 |
| 229 | Conspicuity on the Highway : A Symposium Sponsored by the Committee on Visibility | May 1981 |
| 230 | Assumptions and Issues Influencing the Future Growth of the Aviation Industry | Aug 1981 |
| 231 | Truck-Accident Data Systems : State-of-the-Aret Report | Sep 1981 |
| 232 | Visibility in Construction and Maintenance Work Zones | Oct 1981 |
| 233 | Management of Accident DataSystems | Nov 1981 |
| 234 | 19 | |
| 235 | 19 | |
| 236 | Operation and Maintenance of Transportation Facilities | Dec 1981 |
| 237 | 19 | |
| 238 | Research Problem Statements : Motorist Services | Dec 1981 |
| 239 | Uses and Misuses of Airline Traffic, Financial and Cost Data | Jan 1982 |
| 240 | Traffic Factors Used in Flexible Pavement Design | Apr 1982 |
| 241 | Progress Report on Maintenance and Operations Personnel | Apr 1982 |
| 242 | State of the Art : Vibratory Compaction of Asphalt Pavements | Apr 1982 |
| 243 | Research Problem Statements : Transportation System Management | Apr 1982 |
| 244 | ||
| 245 | Research Problem Statements : Pedestrians | May 1982 |
| 246 | "Roadside Maintenance, Discussion of 1980 Survey : Herbicides in Roadside Maintenance" | Aug 1982 |
| 247 | 1981 Workshop on Aircraft and Airport Compatibility | Aug 1982 |
| 248 | Statewide Transportation Planning : Update on Current Issues and Research | Sep 1982 |
| 249 | Update on Transportation Education Programs | Sep 1982 |
| 250 | Progress Report on Maintenance and Operations Personnel | Jan 1983 |
| 251 | Research Problem Statements : Freeway Operations | Jan 1983 |
| 252 | Evaluation of Chemical Stabilizers | Jan 1983 |
| 253 | Statewide Transportation Planning : Monitoring | Jan 1983 |
| 256 | Evaluation of Severity of Collisions With Roadside Features : Data Needs | Mar 1983 |
| 257 | Transportation Information Systems | May 1983 |
| 258 | Transportation Education and Training : An Update | May 1983 |
| 259 | Economic Benefits and Financing of General Aviation Airports | Jul 1983 |
| 260 | Research Problem Statements in Hydrology, Hydraulics and Water Quality | Jul 1983 |
| 261 | Research Problem Statements in Landscape and Environmental Design | Jul 1983 |
| 262 | Second Look at Moisture Restrictions in Hot-Mix Plant Operations and Construction | Aug 1983 |
| 263 | Research Problem Statements | Aug 1983 |
| 264 | Mini and Microautomobile Forum : Overview and Potential Problems | Sep 1983 |
| 265 | Conference Report : Efficient Intermodal Travel-The Reality or Myth | Sep 1983 |
| 266 | Research Problem Statements : Driver Performance | Sep 1983 |
| 267 | Recommendations for Hazardous Materials Transportation Research and Development Projects | Nov 1983 |
| 268 | Transportation System Planning | Jan 1984 |
| 269 | Transportation Information Systems | Jan 1984 |
| 270 | Progress Report on Maintenance and Operations Personnel | Jan 1984 |
| 271 | Research Problem Statements-Operational Effects of Geometrics | Feb 1984 |
| 272 | Research Problem Statements | Feb 1984 |
| 273 | Incompatibility of Driver-Vehicle-Highway Standards : Recent and Ongoing Research | Apr 1984 |
| 274 | Developments in Aircraft and Airport Compatibility | Apr 1984 |
| 275 | Issues Relating to National Policy on Motorist Information and Roadside Amenities | Apr 1984 |
| 276 | Motorcycle Design : Observations on Status and Research Needs | May 1984 |
| 277 | Prospects for World Aviation | May 1984 |
| 278 | Low Volume Roads : Third International Conference Addresses and Research Needs | May 1984 |
| 279 | Operational and Maintenance Problems With Highway Safety Appurtenances | May 1984 |
| 280 | Benefits of Advance Planning to Meet Transportation Emergencies | Jun 1984 |
| 282 | Developments in Traffic Signal Systems | Jul 1984 |
| 283 | Synthesis of Practice Planning for Small and Medium-Sized Communities | Aug 1984 |
| 284 | Proposed Chapters for the 1985 Highway Capacity Manual - Addendum 1 to TRB Circular 281 | Oct 1984 |
| 285 | 1984 Research Problem Statements - Operational Effects of Geometrics | Oct 1984 |
| 286 | Airfield and Airspace Capacity and Delay : Problems and Action Areas | Nov 1984 |
| 287 | Progress Report on Maintenance and Operations Personnel | Dec 1984 |
| 289 | Proceedings of the 1984 Bus Maintenance Productivity Workshop | Feb 1985 |
| 291 | Research Problem Statements - Research in Engineering Fabrics (Geotextiles) | May 1985 |
| 292 | Energy Consideration in Transportation Design, Construction and Operation | Jun 1985 |
| 293 | Introduction to Comprehensive Computerized Safety Recordkeeping Systems | Jul 1985 |
| 294 | Strategic Planning for Freight : Issues and Research Needs | Sep 1985 |
| 295 | Research Problem Statements : Traffic Signal Systems | Nov 1985 |
| 296 | Research Problem Statements :Operational Effects of Geometrics | Dec 1985 |
| 297 | Providing Visibility and Visual Guidance to the Road User | Dec 1985 |
| 298 | Traffic Management and Planning for Freeway Emergencies and Special Events | Jan 1986 |
| 299 | The Future of Aviation | Feb 1986 |
| 300 | Definition of Practices for Bus Transit On-Time Performance : Preliminary Study | Feb 1986 |
| 301 | Progress Report on Maintenance and Operations Personnel | Mar 1986 |
| 302 | Motorcycle Design : Observations on Status and Research Needs | Apr 1986 |
| 303 | Research Problem Statements : Operator Education and Regulation | May 1986 |
| 304 | Workshop on Transportation Requirements for Urban Activity Centers | Jun 1986 |
| 305 | Economic Consequences of Constraints on the Use of Construction Equipment | Jun 1986 |
| 306 | Reflectorized Devices for Driver Information | Jun 1986 |
| 307 | Presentations to the Committee on Roadside Maintenance | Jul 1986 |
| 308 | "Tort Claims Involving Roadside Safety" | Sep 1986 |
| 309 | Shared Experience in Geotechnical Engineering : Wick Drains | Sep 1986 |
| 310 | Artificial Intelligence and the Air Traffic Control System | Dec 1986 |
| 311 | Development Impact Fees for Financing Transportation Infrastructure | Dec 1986 |
| 312 | Citizen Advisory Committees : Bonus or Boondogle? | Dec 1986 |
| 313 | Traffic Noise Research Needs of State Highway Agencies | Feb 1987 |
| 314 | Progress Report on Maintenance and Operations Personnel | Feb 1987 |
| 315 | Research Needs in the Inland Water Transportation Industry | Mar 1987 |
| 316 | The Changing Government Roles in Airports | Jun 1987 |
| 317 | Impact of Aging Driver Population and Impaired Drivers on Geometric Design | Jun 1987 |
| 318 | Applying Strategic Planning to State Highway Safety Programs | Jun 1987 |
| 319 | Research Problem Statements : Highway Capacity | Jun 1987 |
| 320 | Admixtures for Shotcrete Grouts, Filling Voids, and Nucleation Kinetics of Calcium Chloride | Jun 1987 |
| 321 | Nuclear Density Gauge Monitoring of Asphalt Concrete Compaction | Jun 1987 |
| 322 | Ports, Waterways, Cargo Forecasting, and Intermodal Coordination - Proceedings of the 11th Annual Ports and Waterways Conference | Jul 1987 |
| 323 | Research Priorities in Transportation and Energy | Sep 1987 |
| 324 | Testing Motorist Understanding of Traffic Control Devices | Oct 1987 |
| 325 | 19 | |
| 326 | Management of Freeway Emergencies and Special Events | Dec 1987 |
| 327 | Research Problem Statements : Hydrology, Hydraulics and Water Quality | Feb 1988 |
| 328 | Research Problem Statements on Landscape and Environmental Design | Feb 1988 |
| 329 | The Future of Aviation : Fifth International Workshop | Feb 1988 |
| 330 | Underwater Bridge Inspection Programs | Mar 1988 |
| 331 | Progress Report on Maintenance and Operations Personnel | Mar 1988 |
| 332 | Ports, Waterways, Intermodal Terminals, and International Trade Transportation Issues | Apr 1988 |
| 333 | Outlook for Commercial Supersonic and Hypersonic Transport Aircraft | Jul 1988 |
| 334 | Transportation Trends and Current Research Activities | Jul 1988 |
| 336 | Research Problem Statements on User Information Systems | Sep 1988 |
| 337 | Bicycling and Bicycle Facilities Research Problem Statements | Oct 1988 |
| 338 | Research Needs Related to Intermodal Freight Transportation | Oct 1988 |
| 339 | Research Problem Statements : Pedestrians | Nov 1988 |
| 340 | Design and Construction of Transportation Facilities : Research Problem Statements | Nov 1988 |
| 341 | International Roadside Safety Hardware Research | Dec 1988 |
| 342 | Use of Herbicides in Roadside Maintenance | Dec 1988 |
| 343 | State Role in Public Transportation | Dec 1988 |
| 344 | Traffic Management for Freeway Emergencies and Special Events | Jan 1989 |
| 345 | Truck Research Profiles : A Sample of Recent and Current U. S. and Canadian Projects | Jan 1989 |
| 346 | Proceedings : Seventh Equipment Management Workshop | Mar 1989 |
| 347 | Progress Report on Maintenance and Operations Personnel | Apr 1989 |
| 348 | Aviation Forecasting Methodology : A Special Workshop | Aug 1989 |
| 349 | Research Problem Statements : Operational Effects of Geometrics and Geometric Design | Apr 1989 |
| 350 | Ports, Waterways, Intermodal Terminals, and International Trade Transportation Issues | May 1989 |
| 351 | Safety Factors Related to High-Speed Rail Passenger Systems | Jul 1989 |
| 352 | Future Aviation Activities : Sixth International Workshop | Feb 1990 |
| 353 | Safety of All-Terrain Vehicles : Discussion of Problems and Needs | Nov 1989 |
| 354 | Research Problem Statements in Freeway Operations | Feb 1990 |
| 355 | Adequacy of Research Funding for Transportation Management and Administration Research | Feb 1990 |
| 356 | Microcomputer Software for Geotechnical Engineering | Apr 1990 |
| 357 | National Impact of Foreign-Born Engineers | Mar 1990 |
| 358 | Travelers' Services : Research Problem Statements | Aug 1990 |
| 359 | Traffic Congestion and Suburban Activity Centers | Jul 1990 |
| 360 | Progress Report on Maintenance and Operations Personnel | Jun 1990 |
| 361 | Tort Liability and Risk Management | Jul 1990 |
| 363 | Research Problem Statements : Design and Construction of Transportation Facilities | Sep 1990 |
| 364 | Research Problem Statements : Operation, Safety, and Maintenance of Transportation Facilities | Oct 1990 |
| 365 | --- | |
| 366 | Conference Proceedings : Fourth National High-Occupancy Vehicle (HOV) Facilities Conference | Apr 1990 |
| 367 | Proceedings of the Special Conference on Freight Transportation Data : The Changing Federal Role Since Deregulation | Dec 1990 |
| 368 | Operation and Maintenance of Trantportation Facilities | April 1991 |
| 369 | Research Problme Statements: Public Transportaiton : Marketing, Fare Policy and Rural Public Transportation | April 1991 |
| 370 | Research Problme Statements: Impact of Aging Driver Population on Geometric Design | May 1991 |
| 371 | A Program of Research in Highway Capacity | Jun 1991 |
| 372 | Forecasting Civil Aviation Activity : Methods and Approaches | Jun 1991 |
| 373 | Interim Materials on Unsignalized Intersection Capacity | Jul 1991 |
| 374 | Update of NCHRP Report 230 : Recommended Procedures for the Safety Performance Evaluation of Highway Appurtenances | Jul 1991 |
| 375 | Strategic Highway Safety Plan | Aug 1991 |
| 376 | Proceedings of the 8th Equipment Management Workshop | Aug 1991 |
| 377 | A Research Agenda for Public Transportation | Sep 1991 |
| 378 | Freeway Operations Projects Summary | Sep 1991 |
| 379 | Research Problem Statements Ridesharing and Transportation Demand Management | Sep 1991 |
| 380 | Research Initiatives for Traffic Signal Control Systems | Oct 1991 |
| 381 | How to Develop and Use Equipment Performance Specifications | Oct 1991 |
| 382 | Research Problem Statements Impact of Aging Driver Population on Geometric Design | Nov 1991 |
| 383 | Intelligent Vehicle Highway Systems (IVHS) Communications Standards : Research Needs and Implementation Requirements | Dec 1991 |
| 384 | Conference Proceedings : Fifth National High-Occupancy Vehicle (HOV) Facilities Conference : HOV Facilities - Coming of Age | Dec 1991 |
| 385 | Older Driver Resource Directory | Jan 1992 |
| 386 | Innovative Contracting Practices | Dec 1991 |
| 387 | Research Problem Statements : Safety Factors Related to High-Speed Rail and Maglev passenger Systems | Jan 1992 |
| 388 | Simulator Technology Analysis of Applicability to Motor Vehicle Travel | Feb 1992 |
| 389 | Environmental Research Needs in Transportation | Mar 1992 |
| 390 | Future Aviation Activities : Seventh International Workshop | Feb 1992 |
| 391 | Port-Land Access : Public Policy Issues | Mar 1992 |
| 392 | Maritime Transportation Strategic Planning | Mar 1992 |
| 393 | Trends and Issues in International Aviation | Apr 1992 |
| 394 | Inventory of Special Facilities for Highway Research | Apr 1992 |
| 395 | Airport Access for Disabled and Elderly Persons | May 1992 |
| 397 | Drugged and Drunk Driving | May 1992 |
| 398 | Research and Development Needs for Maintaining the Safety and Mobility of Older Drivers | May 1992 |
| 399 | Truck Research Profiles : 1991 Update | Jun 1992 |
| 400 | Workshop Report : Helicopter Operator Economics | Oct 1992 |
| 401 | Maintenance Research Problem Statements | Dec 1992 |
| 402 | Progress Report on Maintenance and Operations Personnel | Mar 1993 |
| 403 | Epoxy-Coated Reinforcement in Highway Structures | Mar 1993 |
| 404 | Symposium on Integrated Traffic Management Systems | Mar 1993 |
| 405 | Research Problem Statements : Hydrology, Hydraulics and Water Quality | Mar 1993 |
| 406 | Transportation Planning, Programming, and Finance : Proceedings of a Conference | Apr 1993 |
| 407 | Transportation Data Needs : Programs for a New Era. Proceedings of a Conference | Apr 1993 |
| 408 | Alcohol and Other Drugs in Transportation : Research Needs for the Next Decade | Jun 1993 |
| 409 | 6th National Conference on High-Occupancy Vehicle Systems : Moving into the 21st Century | Jun 1993 |
| 410 | National Conference on Advanced Technologies in Public Transportation | Jul 1993 |
| 411 | Communicating With Vehicles : IVHS Research and Operational Test Requirements | Jul 1993 |
| 412 | Primer on Intelligent Vehicle Highway Systems | Aug 1993 |
| 413 | Alcohol and Other Drugs : Their Role in Transportation | Aug 1993 |
| 414 | Human Factors Research in Highway Safety | Sep 1993 |
| 415 | Private Vehicle Access for People with Disabilities : Policy Issues, Options, Research | Oct 1993 |
| 416 | Issues Surrounding Highway and Roadside Safety Management | Oct 1993 |
| 417 | Research Problem Statements : Design and Construction of Transportation Facilities | Nov1993 |
| 418 | Presentations from the 9th Equipment Management Workshop | Dec 1993 |
| 419 | Driver Performance Data Book Update : Older Drivers and IVHS | Mar 1994 |
| 420 | Progress Report on Maintenance and Operations Personnel | Mar 1994 |
| 421 | Workshop on Transit Fare Policy and Management Research Needs and Priorities | Apr 1994 |
| 422 | The Nature of and the Reasons for The Worldwide Decline in Drinking and Driving | Apr 1994 |
| 423 | Characteristics of Bridge Management Systems | Apr 1994 |
| 424 | Research Problem Statements for Motorcycles and Mopeds | Apr 1994 |
| 425 | Future Aviation Activities Eighth International Workshop | May 1994 |
| 426 | The Scientific Approach To Research | May 1994 |
| 427 | Environmental Regulatory Process : Does it Work? Dredging U.S. Ports | Jun 1994 |
| 428 | Spectrum Needs for Intelligent Vehicle-Highway System Application | Jun 1994 |
| 429 | The Licensing of Older Drivers | Jul 1994 |
| 430 | Interchange Operations on the Local Street Side : State of the Art | Jul 1994 |
| 431 | Research and Management for Advanced Traffic Signal Systems | Jul 1994 |
| 432 | Workshop on Safety Research Related to High-Speed Rail and Maglev Passenger Systems | Jul 1994 |
| 433 | Travel Demand Management Innovation and Research Symposium : Setting a Strategic Agenda for the Future | Oct 1994 |
| 434 | Older Driver Resource Directory, Second Edition | Dec 1994 |
| 435 | Roadside Safety Issues | Jan 1995 |
| 436 | Program of Research for Traffic Law Enforcement | Jan 1995 |
| 437 | Strategies for Dealing with the Persistent Drinking Driver | Feb 1995 |
| 438 | Instrumentation of Transportation Embankments Constructed on Soft Ground | Feb 1995 |
| 439 | Progress Report on Maintenance and Operations Personnel | Mar 1995 |
| 440 | Post-NCHRP Report 350 Issues and Research Needs | Apr 1995 |
| 441 | Program of Research for HOV Systems | Apr 1995 |
| 442 | National Conference on High - Occupancy Vehicle Systems : HOV Systems in a New Light, Jun 5-8, 1994 | Jul 1995 |
| 443 | Program of Research for Freeway Operations | May 1995 |
| 444 | Mechanically Stabilized Earth Walls | May 1995 |
| 445 | Airports of Tomorrow | May 1995 |
| 446 | Assessing Worldwide Low-Volume Roads : Problems, Needs and Impacts | May 1995 |
| 447 | Presentations from the 10th Equipment Management Workshop | Jul 1995 |
| 448 | Conduct of Research Workshop Proceedings | Oct 1995 |
| 449 | Summary and Research Needs Statements From the National Symposium on the Disadvantaged Business Enterprise Program in State and Federal Highway Contracting | Nov 1995 |
| 450 | Institutional Aspects of Metropolitan Transportation Planning | Dec 1995 |
| 451 | International Crash Test Standards for Roadside Safety Features | Dec 1995 |
| 452 | Safety Management System : A National Status | Feb 1996 |
| 453 | Roadside Safety Issues Revisited | Feb 1996 |
| 454 | Future Aviation Activities Ninth International Workshop | Feb 1996 |
| 455 | Progress Report on Maintenance and Operations Personnel | Mar 1996 |
| 456 | Driveway and Street Intersection Spacing | Mar 1996 |
| 457 | Glossary of Highway Quality Assurance Terms | Apr 1996 |
| 458 | Graduated Licensing: Past Experiences and Future Status | Apr 1996 |
| 459 | Intermodal Freight Terminal of the Future | Jul 1996 |
| 460 | Public Transportation Management and Planning in a Rapidly Changing Environment : Strategies for Survival | Apr 1996 |
| 461 | Transportation History and TRB's 75th Anniversary | Aug 1996 |
| 462 | 1994 Northridge Earthquake | Sep 1996 |
| 463 | Conference on Major Investment Studies in Transportation (MIS) | Sep 1996 |
| 464 | Research Problem Statements : Design and Construction of Transportation Facilities | Oct 1996 |
| 465 | Conference on Transportation Programming Methods and Issues | Dec 1996 |
| 466 | Research Problem Statements : Hydraulics, Hydrology, and Water Quality | Dec 1996 |
| 467 | Progress Report on Maintenance and Operations Personnel | Feb 1997 |
| 468 | Review of International Practices Used to Evaluate Unsignalized Intersections | Apr 1997 |
| 469 | Environmental Research Needs in Transportation | Mar 1997 |
| 470 | Conduct of Research & Technology Transfer Workshop Proceedings | May 1997 |
| 471 | Statewide Transportation Planning | May 1997 |
| 472 | Research Problem Statements for User Information Systems | May 1997 |
| 473 | Aircraft Noise Modeling | May 1997 |
| 475 | 11th Equipment Management Workshop | Jul 1997 |
| 477 | Assessing the Economic Impact of Transportation Projects : How to Choose the Appropriate Technique for Your Project | Oct 1997 |
| 478 | Toward an Intelligent Air Transportation System : The Role of Technology Transfer | Nov 1997 |
| 479 | Aggregate Tests for Hot-Mix Asphalt : State of the Practice | Dec 1997 |
| 480 | Research Problem Statements for Pedestrians | Jan 1998 |
| 481 | Highway Capacity Expansion and Induced Travel : Evidence and Implications | Feb 1998 |
| 482 | Future Aviation Activities 10th International Workshop | Feb 1998 |
| 483 | Proceedings of the Workshop on International Transit Turnkey and Joint Development | Mar 1998 |
| 484 | National Conference of Critical Issues for the Future of Intercity Passenger Rail | Mar 1998 |
| 485 | Airport System Capital Requirements | May 1998 |
| 486 | Progress Report on Maintenance and Operations Personnel | Apr 1998 |
| 487 | Combating Impaired Driving in an Era of Diminished Resources and Shifting Priorities | Feb 1999 |
| 488 Addendum |
Transportation Technology Transfer: A Primer on the State of Practice
Addendum : References and Bibliography |
May 1998 |
| 490 | Research Problem Statements on Intercity Passenger Rail | Jan 1999 |
| 491 | Inland Waterway Technical Studies | Dec 1999 |
| 492 | Transportation, Energy, and Environment : Policies to Promote Sustainability | Aug 1999 |
| 493 | Progress Report on Maintenance and Operations Personnel | Mar 1999 |
| 494 | Durability of Concrete | Dec 1999 |
| 495 | Forum on Transportation Education and Training : Responding to the Changing Needs of the Profession | Jan 2000 |
| 496 | Future Aviation Activities : 11th International Workshop | Feb 2000 |
| 497 | Older Driver Resource Directory : Third Edition | Feb 2000 |
| 498 v.I&II | Presentations from the 8th International Bridge Management Conference | Jun 2000 |
| 499 | Chemical Properties of Asphalts and Their Effects on Pavement Performance | Jul 2000 |
| 500 | Progress Report on Maintenance and Operations Personnel | Sep 2000 |
| 501 | Strategic Management Research Needs for State Departments of Transportation | Dec 2000 |
| 501a | Annex to Transportation Research Circular Strategic Management Research Needs for State Departments of Transportation : Summaries of State DOT Experience |
Dec 2000 |
| 502 | Alcohol and Other Drugs in Transportation : Research Needs and Priorities | Jan 2001 |
| 503 | Perpetual Bituminous Pavements | Dec 2001 |
| E-C018 | Fourth International Symposium on Highway Capacity | Jun 2000 |
| E-C022 | Maintenance Research Master Planning Workshop | Nov 2000 |
| E-C041 | Supporting the Establishment of Safe Transportation Networks | Jul 31, 2002 |
| E-C052 | Maintenance Management 2003 : Presentations from the 10th AASHTO-TRB Maintenance Management Conference | Jul 18, 2003 |
| E-C059 | Accelerated Highway Construction, Workshop Series Summary | Jan 7, 2004 |
| E-C072 | Implementing Impaired Driving Countermeasures: Putting Research into Action--A Symposium | Jan 6, 2005 |