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July-August 2001, Number 215
Rumble Strips: Finding a Design for Bicycles and Motor Vehicles

May-June 2001, Number 214
Modified Aggregate Test Expedites Superpave

March-April 2001, Number 213
Biological Control of Purple Loosestrife

January-February 2001, Number 212
New Precast Bent Cap System

November-December 2000, Number 211
Spring Load Restrictions

September-October 2000, Number 210
GISHydro 2000

July-August 2000, Number 209
New Ramp Metering Algorithm Improves Systemwide Travel Time

May-June 2000, Number 208
Fiber-Reinforced Polymer Composites for Strengthening Bridges in Oregon

March-April 2000, Number 207
Louisiana's Continuous Intrusion Miniature Cone Penetration Test System

January-February 2000, Number 206
Tire Shreds Save Money for Maine

September-October 1999, Number 204
NCDOT's Experience with Predesign Load Testing

July-August 1999, Number 203
Instrumentation for Measuring Scour at Bridge Piers and Abutments

May-June 1999, Number 202
Longer Bridge Spans with Nebraska's NU I-Girders

March-April 1999, Number 201
California Develops Improved Problem Driver Countermeasures

January-February 1999, Number 200
Cost-Effective Load Transfer Restoration of Jointed Concrete Pavements

July-August 1998, Number 197
Information Engineering Boosts Utah DOT's Efficiency

May-June 1998, Number 196
Navigation Model Study Improves River Safety of New Bridge

March-April 1998, Number 195
Microtunneling Technology Benefits Port Authority of New York and New Jersey

January-February 1998, Number 194
Modern and Comprehensive Bridge Design Specifications

November-December 1997, Number 193
U.S. and European Asphalt Technologies: A Perfect Marriage

September-October 1997, Number 192
Michigan DOT Reflects on Signs

July-August 1997, Number 191
Preventing Derailments at Turnouts

May-June 1997, Number 190
Memorial Tunnel Fire Test Program

March-April 1997, Number 189
Variable Tire Pressure Technology: Reducing Transportation Costs and Protecting Forest Ecosystems

November-December 1996, Number 187
Caltrans Research Eases Road Roughness Measurements

September-October 1996, Number 186
Kansas Smooths Way to Cost-Effective Road Profiles

July-August 1996, Number 185
Maine Tracks Salt to ITS Source

May-June 1996, Number 184
New York Puts Industrial By-Products Back to Work

November-December 1995, Number 181
CASPER: The Friendly, Efficient Snow Routes Planner

September-October 1995, Number 180
Asphalt Content Test Offers Improvement Over Solvents

July-August 1995, Number 179
New Blasting Technique in Washington State Saves Money and Time

May-June 1995, Number 178
Nevada's Winter Strategy Keeps Roads and Environment Clean

March-April 1995, Number 177
Ship Simulation Saves $4 Million on Brownsville Channel

January-February 1995, Number 176
Laser Videodisc Technology Meets Changing Operational Demands

November-December 1994, Number 175
Minnesota Develops Method To Recycle Petroleum-Contaminated Soil

September-October 1994, Number 174
Public/Private Partnership Beneficial for Truck Research

July-August 1994, Number 173
Bridge-Testing Technique Receives High Rating in New York

March-April 1994, Number 171
Meteor Burst Communication: Nevada Research Uses Falling Stars for Data Transmission

November-December 1993, Number 169
Computerized School Bus Routes Save Time and Money

September-October 1993, Number 168
Florida Improves Noise Prediction

July-August 1993, Number 167
Lightweight Wood Fiber Material Used for Embankment

May-June 1993, Number 166
Full-Scale Arrester Bed Testing Leads to More Cost-Effective Design

March-April 1993, Number 165
INFORM: Precursor to Intelligent Vehicle-Highway Systems

November-December 1992, Number 163
Research Predicts Low-Maintenance Attenuator Performance

September-October 1992, Number 162
Median Jersey Barriers Reduce Severity of Freeway Crashes

March-April 1992, Number 159
Maine DOT Calculates Bituminous Overlay Quantities--ASAP

January-February 1992, Number 158
Weevils Help Tennessee DOT Control Musk Thistle

November-December 1991, Number 157
Using Accident Records to Save Lives

July-August 1991, Number 155
Relieving Campus Congestion: Campus-Community Transportation System Finds a Way

May-June 1991, Number 154
Colorado Rockfall Studies

March-April 1991, Number 153
Computer-Aided Bridge Design: PennDOT Uses BRADD-2 To Design Single-Span Bridges

January-February 1991, Number 152
Acoustical Aircraft Counter Provides Data for Investment Decisions

September-October 1990, Number 150
Redesign of Guardrail to Bridge-Rail Anchorage Secures Benefits

July-August 1990, Number 149
Vehicle Replacement Strategies

March-April 1990, Number 147
Wisconsin's Winter Weather System

January-February 1990, Number 146
Salt Marsh Restored

November-December 1989, Number 145
REAR GUARD: Additional Brake Lamps Help Prevent Rear-End Crashes

September-October 1989, Number 144
MODEL SOLUTIONS: Mississippi River Traffic Jam Eased by Use of Model Research

May-June 1989, Number 142
Texas Looks to Space

March-April 1989, Number 141
Shale Handling Procedures Save Dollars

January-February 1989, Number 140
Preventing Back Injuries: AAR Program Adopted at Union Pacific

November-December 1988, Number 139
Wick Drains Gain Acceptance

September-October 1988, Number 138
Eliminating Shear Connectors Slashes Culvert Cost

July-August 1988, Number 137
New Sign-Lighting System Saves Energy and Maintenance

May-June 1988, Number 136
Broadened Diesel Fuel Specifications Reduce Railroad Cost

March-April 1988, Number 135
Rumble Strips Alert Drivers, Save Lives and Money

January-February 1988, Number 134
Radial Axle Freight Car Trucks Generate Savings

November-December 1987, Number 133
Ventilation and Environmental Control in Subways

September-October 1987, Number 132
Small Bars Lead to Large Savings

July-August 1987, Number 131
Hydraulic Model Determines Cost-Effective Flood Mitigation

May-June 1987, Number 130
Improved Method for Measuring the Chloride Permeability of Concrete

March-April 1987, Number 129
The Highway Capacity Manual: Development and Application

January-February 1987, Number 128
Dynamic Wheel Load Detector Extends Life of Concrete Railroad Ties

November-December 1986, Number 127
Strengthening of Highway Bridges by Posttensioning

September-October 1986, Number 126
ConnDOT Uses Laser Videodiscs in Photologging

July-August 1986, Number 125
NYSDOT Improves Materials and Installation Methods for Loop Detectors

May-June 1986, Number 124
Illinois Improves Patching Procedures for Continuously Reinforced Concrete Pavements

March-April 1986, Number 123
Quick Response: A New Approach to Planning

January-February 1986, Number 122
Another Day--Another $20,000 of Savings Realized From Kansas DOT Research and Development Studies

November-December 1985, Number 121
NCHRP Study--Methods for In-Place Repair of Damaged Prestressed Concrete Bridges

September-October 1985, Number 120
Electromagnetic Compatibility Improves Reliability and Safety

July-August 1985, Number 119
Asphalt Pavement Recycling

May-June 1985, Number 118
RUCUS: Automated Vehicle and Scheduling System

March-April 1985, Number 117
Tire-Anchored Timber Walls

January-February 1985, Number 116
Avoiding the Costs of Closures and Detours During Bridge Deck Rehabilitation

November-December 1984, Number 115
Blowing Snow - Fencing Parries Winter's Thrust

September-October 1984, Number 114
New Jersey DOT Develops Improved Procedure for Adjusting Manholes

July-August 1984, Number 113
New York Retrofits Railings and Saves Money

May-June 1984, Number 112
Improved Utilization of Multilevel Autorack Railcars

March-April 1984, Number 111
Caltrans Trims Footings and Costs From Concrete Median Barriers

January-February 1984, Number 110
Wisconsin DOT Saves on Transit Insurance

November-December 1983, Number 109
Shield a Fixed Highway Object and Save a Life

September-October 1983, Number 108a
Rebar Tending: Quite an Art

September-October 1983, Number 108b
FHWA R&D Program Produces Major Improvements in Seismic Design of Highway Bridges

July-August 1983, Number 107a
Portable Crash Cushion Saves Lives of Maintenance Crews

July-August 1983, Number 107b
Arizona DOT Adopts PMS and $ave$ A Bundle

May-June 1983, Number 106
Computer Model Helps Railroads Improve Freight Operations

March-April 1983, Number 105
Operational Improvements Cut Rail Transit Power Costs

January-February 1983, Number 104
Kansas DOT Saves Its Bridges --and $1 Million Besides

RPO Compilation - September 1983
BRIDGES -- Building on Centuries of Accumulated Knowledge, Research Continues to Pay Off

Note: Contact persons may have changed since original publication of the RPO articles.

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