MDOT - DTMB
Michigan Department of Transportation
Research
Administration Repository
Background:
Research Administration, or RAd, supports transportation research across a variety of different focus areas. Reports, spotlights, and other research related documents are available to search and browse in the online repository. To open any document, a file will need to be downloaded to your device. If you have any problems downloading any documents, please contact Research Administration.
Questions:
Please contact Research Administration with any questions.
E-mail: [email protected]
Website: https://www.michigan.gov/mdot/programs/research/staff
Note:Select any check box under Report Number, Publication Title, Author, Published Date, Keywords or File Name and enter a text in the Search By text box in the left navigation panel and press find button for Research Administration search results.
If you require assistance accessing this information or require it in an alternative format, contact the Michigan Department of Transportation's (MDOT) Americans with Disabilities Act (ADA) coordinator at Michigan.gov/MDOT-ADA.
| SPR-1748 | Speed warning technologies slow drivers in critical speed-change areas | CTC & Associates | 09/03/2025 | dynamic speed feedback sign, DSFS, LED chevrons, enhanced warning | SPR-1748-Spotlight.pdf |
| SPR-1748 | Efficacy of Speed Warning Technologies | Timothy J. Gates, Magdalena Cavka, Sagar Keshari, Sakar Pahari, Peter T.Savolainen, Dong Zhao | 07/31/2025 | dynamic speed feedback sign, DSFS, LED chevrons, enhanced warningsign, horizontal curves, speed transition, roundabout, lane departures, driverbehavior, speed reduction, countermeasures | SPR-1748-Report.pdf |
| SPR-1744 | Examination of Lighting Practices at Crosswalks Corridors | Ron Van Houten, Valerian Kwigizile, Jun-Seok Oh, Sia Mwende, and Jacob Engle | 07/21/2025 | Pedestrian-vehicle crashes, Lighting, Crosswalks, K&A Crashes, Smart Lighting, Light bars, Crosswalk Lighting crashes, Light level readings, Highway factors in crashes, | SPR-1744-Report.pdf |
| SPR-1704 | Dynamic Speed Feedback Signs Effectively Improve Driver Behavior | CTC & Associates | 11/25/2024 | Dynamic speed feedback sign, freeway exit ramp, horizontal curves, lane departure crashes, driver behavior | SPR-1704-Implementation-Spotlight.pdf |
| SPR-1692 | Green Strobes Added to MDOT Winter Maintenance Vehicles Increase Visibility | CTC & Associates | 02/23/2024 | winter maintenance, warning light, green strobe, safety, visibility, snowplow, flashing pattern, conspicuity, glare, implementation | SPR-1692-Implementation-Spotlight.pdf |
| SPR-1734 | Making high-speed corridors safer for pedestrians and cyclists | CTC & Associates | 01/23/2024 | Pedestrian-vehicle crashes, Bicycle crashes, Higher speed roads, Nighttime crashes, Light level readings, High crash corridors, Highway factors in crashes, Crash site visits | SPR-1734-Spotlight.pdf |
| SPR-1734 | Effective Pedestrian/Non-Motorized Crossing Enhancements Along Higher Speed Corridors | Ron Van Houten, Valerian Kwigizile, Jun-Seok Oh, Sia Mwende, and Baraah Qawasmeh | 10/30/2023 | Pedestrian-vehicle crashes, Bicycle crashes, Higher speed roads, Nighttime crashes, Light level readings, High crash corridors, Highway factors in crashes, Crash site visits | SPR-1734-Report.pdf |
| SPR-1725 | Maximizing the safety, economic and environmental benefits of Michigan roundabouts | CTC & Associates | 07/01/2023 | Roundabouts, yielding behavior, speed selection, safety, empirical | SPR-1725-Spotlight.pdf |
| SPR-1725 | Evaluating the Performance and Safety Effectiveness of Roundabouts - An Update | 01/30/2023 | Roundabouts, yielding behavior, speed selection, safety, empirical | SPR-1725-Report.pdf | |
| SPR-1714 | Evaluating the Impacts of the 2017 Legislative Mandated Speed Limit Increases | Peter Savolainen; Tomothy Gates | 06/30/2022 | speed limit increase, freeways, two-lane highways, COVID-19 | SPR-1714-Report.pdf |
| SPR-1704 | Dynamic signs along Michigan's freeway ramps improve driver behavior | CTC & Associates | 04/01/2022 | Dynamic speed feedback sign, freeway exit ramp, horizontal curves, lane departure crashes, driver behavior | SPR-1704-Spotlight.pdf |
| SPR-1708 | Updating best practices to keep pedestrians and bicyclists safe | 04/01/2022 | Pedestrian design, bicycle design, towards zero death, vision zero, crossing enhancements, COVID-19 impacts, bicycle facilities, safety programs | SPR-1708-Spotlight.pdf | |
| SPR-1706 | Evaluating safety and traffic improvements along Michigan?s first flex route | CTC & Associates | 04/01/2022 | US-23, Flex route, performance, safety, public perception | SPR-1706-Spotlight.pdf |
| SPR-1708 | Synthesis of National Best Practices on Pedestrian and Bicycle Design, Guidance, and Technology Innovations | Timothy Gates, Tongbin Teresa Qu, J | 01/27/2022 | Pedestrian design, bicycle design, towards zero death, vision zero, crossing enhancements, COVID-19 impacts, bicycle facilities, safety programs | SPR-1708-Report.pdf |
| SPR-1704 | Measure the Operational Cost and Benefit of Speed Feedback Signs | Timothy J. Gates, Peter T. Savolain | 01/23/2022 | Dynamic speed feedback sign, freeway exit ramp, horizontal curves, lane departure crashes, driver behavior | SPR-1704-Report.pdf |
| SPR-1706 | US-23 Performance, Safety, and Perception Assessment | Eva Kassens-Noor, Peter T. Savolain | 01/21/2022 | US-23, Flex route, performance, safety, public perception | SPR-1706-Report.pdf |
| SPR-1686 | Insights into the Effective Use of Dynamic Message Signs for Traffic Safety | 11/01/2021 | Safety message; dynamic message sign; changeable message sign | SPR-1686-Spotlight.pdf | |
| SPR-1686 | Effectiveness of Crash Fact/Safety Message Signs on Dynamic Message Signs | Peter T. Savolainen, Timothy J. Gat | 08/11/2021 | Safety message; dynamic message sign; changeable message sign | SPR-1686-Report.pdf |
| SPR-1692 | Green warning lights make winter maintenance trucks more visible | 12/01/2020 | winter maintenance, warning light, green strobe, safety, visibility, snowplow, flashing pattern, conspicuity, glare | SPR-1692-Spotlight.pdf | |
| SPR-1692 | Effectiveness of Green Strobes on Winter Maintenance Vehicles and Equipment | Ali Zockaie, Ramin Saedi, Fatemeh F | 08/31/2020 | winter maintenance, warning light, green strobe, safety, visibility, snowplow, flashing pattern, conspicuity, glare | SPR-1692-Report.pdf |
| SPR-1683 | Michigan draws from effective safety strategies nationwide to reduce road deaths and injuries | 11/01/2019 | Strategic Highway Safety Plans, Towards Zero Deaths, Highway Safety Improvement Program, SHSP, TZD, HSIP, Vision Zero | SPR-1683-Spotlight.pdf | |
| SPR-1683 | Evaluation of the Michigan Department of Transportation?s Highway Safety Programs | Jonathan Kay, Timothy Gates, Andrew | 07/26/2019 | Strategic Highway Safety Plans, Towards Zero Deaths, Highway Safety Improvement Program, SHSP, TZD, HSIP, Vision Zero | SPR-1683-Report.pdf |
| SPR-1677 | Evaluation/Report for Collision Avoidance & Mitigation System (CAMS) on Winter Maintenance Trucks (WMT) | 09/21/2018 | Collision avoidance and mitigation systems, winter maintenance operation, driver behavioral analysis, encroachment rate, response time, relative headway, safety improvement, warning light | SPR-1677-Report.pdf | |
| SPR-1645 | Site-Specific Data will Improve Safety Decisions for Michigan Rural Roads | 08/01/2018 | Safety performance function; SPF; intersections; segments; signalized; stopcontrolled; crash modification factor; CMF; severity distribution function; SDF | SPR-1645-Spotlight.pdf | |
| SPR-1655 | Michigan's Traffic Incident Management Effort: Progress and Future Vision | 07/01/2018 | TIM, traffic incident management, first responder, incident, performance measures, program evaluation, training, social media, funding, After Action Reviews, Steer it Clear it, move over, slow down, h | SPR-1655-Spotlight.pdf | |
| SPR-1672 | Identifying Potential Workzone Countermeasures Using Connected-Vehicle and Driving Data | 06/04/2018 | Workzone Safety, Connected Vehicle, Workzone Crash, Workzone Speed, DSRC, V2V, V2I | SPR-1672-Report.pdf | |
| SPR-1655 | Further Assessments of Safe, Quick Clearance Strategies, Phase II | 05/04/2018 | TIM, traffic incident management, first responder, incident, performance measures, program evaluation, training, social media, funding, After Action Reviews, Steer it Clear it, move over, slow down, h | SPR-1655-Report.pdf | |
| SPR-1645 | Michigan Rural Segment Safety Performance Function (SPFs) Development and Support | 03/31/2018 | Safety performance function; SPF; intersections; segments; signalized; stopcontrolled; crash modification factor; CMF; severity distribution function; SDF | SPR-1645-Report.pdf | |
| SPR-1653 | Design Enhancements Make Roads Safer For Older Drivers | 07/01/2017 | Older drivers, crashes, roadway features, roadway design guidance. | SPR-1653-Spotlight.pdf | |
| SPR-1646 | MDOT's Successful Road Delineation Program Will Become Even Better | 06/01/2017 | delineation, short range, long range, pavement markings, benefit-cost, safety | SPR-1646-Spotlight.pdf | |
| SPR-1643 | Gateway treatment makes crosswalks safer for pedestrians | 05/01/2017 | SPR-1643-Spotlight.pdf | ||
| SPR-1646 | Evaluation of Road Delineation of Practices in Michigan | 03/31/2017 | delineation, short range, long range, pavement markings, benefit-cost, safety | SPR-1646-Report.pdf | |
| SPR-1653 | Association of Michigan's Older Adult Crashes with Roadway Features | 03/31/2017 | Older drivers, crashes, roadway features, roadway design guidance. | SPR-1653-Report.pdf | |
| SPR-1643 | Comparison of Alternative Pedestrian Crossing Treatments: Follow-Up Report | Ron Van Houten, Jonathan Hochmuth | 12/01/2016 | In-street sign, R1-6 Sign, Gateway Treatment of | SPR-1643-Report.pdf |
| SPR-1639 | Local Data Will Help Michigan Make Better Safety Investment Decisions | 07/01/2016 | SPR-1639-Spotlight.pdf | ||
| SPR-1639 | Michigan Urban Trunkline Segments Safety Performance Functions (SPFs) Development and Support | 07/01/2016 | SPR-1639-Report.pdf | ||
| SPR-1638 | Gateway Treatment Alternatives for Pedestrian Crossings | 02/01/2016 | SPR-1638-Spotlight.pdf | ||
| SPR-1638 | Comparison of Alternative Pedestrian Crossing Treatments | 02/01/2016 | SPR-1638-Report.pdf | ||
| SPR-1626 | Improving of Michigan Climatic Files in Pavement ME Design | 10/01/2015 | SPR-1626-Report.pdf | ||
| SPR-1636 | New Signs and Signals Make Roads Safer for Older Drivers | 09/01/2015 | SPR-1636-Spotlight.pdf | ||
| SPR-1636 | Evaluation of Michigan?s Engineering Improvements for Older Drivers | 09/01/2015 | SPR-1636-Report.pdf | ||
| SPR-1628 | Local Data Will Help Michigan Make Better Safety Investment Decisions | 06/01/2015 | SPR-1628-Spotlight.pdf | ||
| SPR-1628 | Michigan Urban Trunkline Intersections Safety Performance Function (SPFs) Development and Support | 06/01/2015 | SPR-1628-Report.pdf | ||
| SPR-1609B | Evaluating Outcomes of Raising Speed Limits on High Speed Non-Freeways | 04/01/2015 | SPR-1609B-Report.pdf | ||
| SPR-1627 | Evaluation of Non-Freeway Rumble Strips ? Phase II - Implementation Guidelines | 03/01/2015 | SPR-1627-Implementation-Guidelines.pdf | ||
| SPR-1627 | Centerline Rumble Strips on Rural Highways Shown to Cut Crashes in Half | 03/01/2015 | SPR-1627-Spotlights.pdf | ||
| SPR-1627 | Evaluation of Non-Freeway Rumble Strips ? Phase II | 03/01/2015 | SPR-1627-Report.pdf | ||
| SPR-1612 | Cable Median Barriers: A Cost-Effective Means To Save Lives | 10/01/2014 | SPR-1612-Spotlight.pdf | ||
| SPR-1612 | Study of High Tension Cable Barrier on Michigan Roadways | 10/01/2014 | SPR-1612-Report.pdf | ||
| SPR-1609A | Evaluating the Impacts of Proposed Speed Limit Increases in Michigan | 07/01/2014 | SPR-1609A-Spotlight.pdf | ||
| SPR-1609A | Evaluating the Impacts of Speed Limit Policy Alternatives | 07/01/2014 | SPR-1609A-Report.pdf | ||
| SPR-1592 | Recommendations for Meeting the Mobility Needs of Older Adults in Rural Michigan | 12/01/2012 | SPR-1592-Report.pdf | ||
| SPR-1592 | Improving Mobility and Transportation Options for Michigan's Rural Seniors | 12/01/2012 | SPR-1592-Spotlight.pdf | ||
| SPR-1583 | Spreading the Word About the Quick Clearance Law | 09/01/2012 | SPR-1583-Spotlight.pdf | ||
| SPR-1583 | Implementation of Quick Clearance in Michigan | 09/01/2012 | SPR-1583-Report.pdf | ||
| SPR-1581 | Best Practices for Emergency Rerouting | 09/01/2012 | SPR-1581-Report.pdf | ||
| SPR-1575 | Impact of Non-Freeway Rumble Strips ? Phase 1 | 06/01/2012 | SPR-1575-Report.pdf | ||
| SPR-1575 | Evaluating the Benefits of Centerline Rumble Strips on Rural Highways | 06/01/2012 | SPR-1575-Spotlight.pdf | ||
| SPR-1555 | Safety and Operational Analysis of Four-Lane to Three-Lane Conversions (Road Diets) in Michigan | 01/01/2012 | SPR-1555-Spotlight.pdf | ||
| SPR-1555 | Safety Analysis of 4-Lane to 3-Lane Conversions (Road Diets) in Michigan | 01/01/2012 | SPR-1555-Report.pdf | ||
| SPR-1561 | Changing the Behavior to Improve Driver Safety | 09/01/2011 | SPR-1561-Spotlight.pdf | ||
| SPR-1562 | Recommendations for Meeting the Transportation Needs of Michigan?s Aging Population | 09/01/2011 | SPR-1562-Report.pdf | ||
| SPR-1562 | Enhancing the Safety and Mobility of Michigan's Older Residents | 09/01/2011 | SPR-1562-Spotlight.pdf | ||
| SPR-1561 | Improving Driver Safety with Behavioral Countermeasures | 09/01/2011 | SPR-1561-Report.pdf | ||
| SPR-1542 | Roundabouts: How to Get Around a Safer Intersection | 03/01/2011 | SPR-1542-Spotlight.pdf | ||
| SPR-1542 | Improving Driver?s Ability to Safely and Effectively Use Roundabouts: Educating the Public to Negotiate Roundabouts | 03/01/2011 | SPR-1542-Report.pdf | ||
| SPR-1474 | Investigation of Breakaway Light Standards | 04/01/2006 | SPR-1474-Report.pdf | ||
| SPR-1475 | Deer-Vehicle Collisions: Understanding of Accident Characteristics and Drivers Attitude Awareness and Involvement | 01/01/2006 | SPR-1475-Report.pdf | ||
| SPR-1446 | Safety Performance Evaluation of Michigan?s 4x5 Portable Sign Support | 06/01/2003 | SPR-1446-Report.pdf | ||
| RR-774 | Identification of Locations Suitable for Raising the Speed Limit on Full Access Roads in Michigan | 09/01/2001 | RR-774-Report.pdf | ||
| RR-771 | The Impact of Raising the Speed Limit on Freeways in Michigan ? Vol 1 & 2 | 08/01/2000 | RR-771-Report.pdf | ||
| RR-770 | Effect on Crashes Due to Construction of Directional Crossovers to Replace Bidirectional Crossovers | 02/01/2000 | RR-770-Report.pdf | ||
| RR-768 | Conversion of Streets from One-Way to Two-Way Operation | 01/01/2000 | RR-768-Report.pdf | ||
| RR-767 | An Evaluation of Speed Control Techniques in Work Zones | 07/01/1999 | RR-767-Report.pdf | ||
| RR-759 | 1997 Work Zone Speed Study | 08/01/1998 | RR-759-Report.pdf | ||
| RR-754 | An Evaluation of the Michigan 70 MPH Speed Limit | 12/01/1996 | RR-754-Report.pdf | ||
| RR-749 | Direct Observation of Safety Belt Use in Michigan - Fall 1995 | 10/01/1995 | RR-749-Report.pdf | ||
| RR-743 | Direct Observation of Safety Belt Use in Michigan - Fall 1994 | 10/01/1994 | RR-743-Report.pdf | ||
| RR-734 | Effect of Large Trucks on Traffic Safety and Operations | 06/01/1993 | RR-734-Report.pdf | ||
| RR-730 | Comparison of Speed Zoning Procedures and Their Effectiveness | 09/01/1992 | RR-730-Report.pdf | ||
| RR-725 | Safety and Structural Implications of Seat Belts on Transit Buses ? Phase II & III | 09/01/1991 | RR-725-Report.pdf | ||
| RR-709 | State Trunkline Accident Surveillance Program - City of Detroit | 03/01/1990 | RR-709-Report.pdf | ||
| RR-708 | State Trunkline Accident Surveillance Program - St. Clair County | 01/01/1990 | RR-708-Report.pdf | ||
| RR-697 | Transportation Safety in Michigan - Annual Report | 01/01/1989 | RR-697-Report.pdf | ||
| RR-693 | 15th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1987-1988 | 08/01/1988 | RR-693-Report.pdf | ||
| RR-692 | The Safety of Farm Truck Operations | 06/01/1988 | RR-692-Report.pdf | ||
| RR-686 | Analysis of Accident Rates of Heavy-Duty Vehicles | 04/01/1988 | RR-686-Report.pdf | ||
| RR-685 | Analysis of Speed Zoning Effectiveness | 03/01/1988 | RR-685-Report.pdf | ||
| RR-682 | Transportation Safety in Michigan - Annual Report | 01/01/1988 | RR-682-Report.pdf | ||
| RR-678 | The Use of Funneling as a Traffic Control Device to Reduce Speeds Within Freeway Construction Zones | 08/01/1987 | RR-678-Report.pdf | ||
| RR-660 | 13th Annual Report of Michigan's Overall Highway Safety Improvement Program | 08/01/1986 | RR-660-Report.pdf | ||
| RR-649 | 13th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1985-1986 | 01/01/1986 | RR-649-Report.pdf | ||
| RR-647 | Vehicle and Geometric Variables Related to Accidents in Rural No-Passing Zones | 11/01/1985 | RR-647-Report.pdf | ||
| RR-643 | An Investigation of Swareflex Wildlife Warning Reflectors | 07/01/1985 | RR-643-Report.pdf | ||
| RR-634 | 12th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1984-1985 | 01/01/1985 | RR-634-Report.pdf | ||
| RR-633 | A Report on the State of the Practice on No Passing Zone Signing and Marking | 12/01/1984 | RR-633-Report.pdf | ||
| RR-631 | User?s Manual: On Traffic Cost-Effectiveness Evaluation of Barriers | 11/01/1984 | RR-631-Report.pdf | ||
| SPR-1253 | An Examination of Studies Which Investigate the Question of Accident Reduction Through Full License Plate Reflectorization | 10/01/1984 | SPR-1253-Report.pdf | ||
| RR-629 | An Evaluation of Effectiveness of Deer Crossing Warning Signs | 09/01/1984 | RR-629-Report.pdf | ||
| SPR-1249 | Evaluation of Glare Screen | 08/01/1984 | SPR-1249-Report.pdf | ||
| RR-621 | 11th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1983-1984 | 01/01/1984 | RR-621-Report.pdf | ||
| RR-617 | 10th Annual Report of Michigan's Overall Highway Safety Improvement Program | 09/01/1983 | RR-617-Report.pdf | ||
| RR-616 | Nighttime Legibility of License Plates | 07/01/1983 | RR-616-Report.pdf | ||
| SPR-1221 | Evaluation of Breakaway Cable Terminal Endings on Guardrail | 05/01/1983 | SPR-1221-Report.pdf | ||
| RR-611 | 10th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1982-1983 | 01/01/1983 | RR-611-Report.pdf | ||
| RR-577 | An Evaluation of 4-Way Stop Sign Control | 02/01/1981 | RR-577-Report.pdf | ||
| RR-576 | 8th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1980-1981 | 01/01/1981 | RR-576-Report.pdf | ||
| RR-573 | Evaluation of Five Safety Improvement Projects | 12/01/1980 | RR-573-Report.pdf | ||
| RR-574 | Project BEAR (Broad Emergency Assistance Radio) One Year Evaluation | 12/01/1980 | RR-574-Report.pdf | ||
| RR-570 | 7th Annual Report of Michigan's Overall Highway Safety Improvement Program | 08/01/1980 | RR-570-Report.pdf | ||
| RR-547 | 6th Annual Report of Michigan's Overall Highway Safety Improvement Program | 08/01/1979 | RR-547-Report.pdf | ||
| RR-549 | A Comparative Analysis of Truck Accidents in the State of Michigan | 08/01/1979 | RR-549-Report.pdf | ||
| SPR-1116 | Anti-Glare Screen Median Fence | 05/01/1979 | SPR-1116-Report.pdf | ||
| SPR-1118 | A Probability Model for Determining the Safety Benefits of Median Barrier Installations | 05/01/1979 | SPR-1118-Report.pdf | ||
| RR-532 | 6th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1978-1979 | 01/01/1979 | RR-532-Report.pdf | ||
| SPR-1106 | A Survey of Median Barriers and Highway Safety | 01/01/1979 | SPR-1106-Report.pdf | ||
| RR-511 | 5th Annual Report of Michigan's Overall Highway Safety Improvement Program | 08/01/1978 | RR-511-Report.pdf | ||
| RR-509 | Guidelines for Traffic Control in School Areas | 07/01/1978 | RR-509-Report.pdf | ||
| RR-495 | 5th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1977-1978 | 01/01/1978 | RR-495-Report.pdf | ||
| RR-493 | A Study of Accident Experience at Michigan Trunkline Intersection Control Beacon Installations | 12/01/1977 | RR-493-Report.pdf | ||
| SPR-1066 | Raised Pavement Markers | 07/01/1977 | SPR-1066-Report.pdf | ||
| RR-480 | Analysis of Truck Accidents in Michigan | 06/01/1977 | RR-480-Report.pdf | ||
| RR-479 | Concrete Median Barrier Study During Periods of Snow Accumulation | 05/01/1977 | RR-479-Report.pdf | ||
| RR-469 | 4th Annual Report of Michigan's Overall Highway Safety Improvement Program: 1976-1977 | 01/01/1977 | RR-469-Report.pdf | ||
| RR-464 | A Study to Identify Hydroplaning Accidents | 12/01/1976 | RR-464-Report.pdf | ||
| SPR-928 | Lights and Lighting for Hazard Warning and Delineation | G.M. Smith, M.H. Janson | 10/01/1976 | Field studies; Flashing traffic signals; Hazard markings; Highway delineators; Lighting; Simulation; Vision; Yellow interval (Traffic signal cycle) | SPR-928-Report.pdf |
| RR-452 | A Study of Two-Lane Rural Roadside Accidents | 08/01/1976 | RR-452-Report.pdf | ||
| SPR-995 | Median Barriers and Highway Safety | L. F. Holbrook, Wen Hou Kuo | 05/01/1976 | guardrail, cable barriers, median barriers, barrier installation, injury property damage, highway design, risk analysis | SPR-995-Report.pdf |
| SPR-988 | A Study of Reflectorized Llicense Plates and Night Accident Reduction and Cost/Benefit Analysis | L.F. Holbrook | 02/01/1976 | Analysis, Costs, Reflective Materials, Cost analysis, Benefit cost analysis | SPR-988-Report.pdf |
| RR-427 | A Traffic Accident Analysis in Ottawa County | 01/01/1976 | RR-427-Report.pdf | ||
| RR-426 | 3rd Annual Report of Michigan's Overall Highway Safety Improvement Program: 1975-1976 | 01/01/1976 | RR-426-Report.pdf | ||
| SPR-980 | Trial Installation of Rumble Strips in Asphalt Shoulders | J.E. Simonsen | 12/01/1975 | M-78, Genesee county, Shiawassee county, imprinted corrugations, bituminous stabilized material, bituminous aggregate, sound levels | SPR-980-Report.pdf |
| RR-418 | 2nd Annual Report of Michigan's Overall Highway Safety Improvement Program | 08/01/1975 | RR-418-Report.pdf | ||
| SPR-946 | Office Memorandum: Michigan?s Accident Experience with Glass Bead License Plate Reflectorization | L.F. Holbrook | 06/30/1975 | SPR-964-Report.pdf | |
| RR-410 | Effects of the Energy Crisis and 55 MPH Speed Limit in Michigan | 04/01/1975 | RR-410-Report.pdf | ||
| RR-407 | 1973 Accident Profiles for the State Highway System | 03/01/1975 | RR-407-Report.pdf | ||
| RR-396 | No Passing Zone Resurvey of State Highways | 01/01/1975 | RR-396-Report.pdf | ||
| RR-395 | 2nd Annual Report of Michigan's Overall Highway Safety Improvement Program: 1974-1975 | 01/01/1975 | RR-395-Report.pdf | ||
| RR-404 | Design Guides for Roadside Safety Improvement Program: Task 1 | 01/01/1975 | RR-404-Report.pdf | ||
| RR-391 | Safety Aspects of the 55 MPH Speed Limit | 12/01/1974 | RR-391-Report.pdf | ||
| RR-379 | 1st Annual Report of Michigan's Overall Highway Safety Improvement Program | 08/01/1974 | RR-379-Report.pdf | ||
| RR-380 | A Traffic Accident Analysis of High Accident Locations in the city of Marquette | 08/01/1974 | RR-380-Report.pdf | ||
| RR-381 | Analysis of Interstate Accidents in Michigan | 08/01/1974 | RR-381-Report.pdf | ||
| RR-373 | 1973 Analysis of State Highway Accident Facts | 07/01/1974 | RR-373-Report.pdf | ||
| RR-372 | Analysis of Guardrail Accidents in Michigan | 07/01/1974 | RR-372-Report.pdf | ||
| RR-365 | A Traffic Accident Analysis and Traffic Control Devices Inventory in Berrien County | 04/01/1974 | RR-365-Report.pdf | ||
| RR-364 | A Traffic Accident Analysis of High Accident Locations in Jackson County | 03/01/1974 | RR-364-Report.pdf | ||
| SPR-903 | Office Memorandum: Study of Glare Due to Parking Lot Lighting on US-127 near M-36, Mason | 02/19/1974 | SPR-903-Report.pdf | ||
| RR-361 | Color Coding Study for Freeway Markings Median Delineation Phase | 02/01/1974 | RR-361-Report.pdf | ||
| SPR-897 | Legibility Distance of I-69 Reflector Button Legend Signs | G.M. Smith | 01/01/1974 | SPR-897-Report.pdf | |
| RR-346 | 1st Annual Report of Michigan's Overall Highway Safety Improvement Program: 1973-1974 | 01/01/1974 | RR-346-Report.pdf | ||
| RR-355 | A Traffic Accident Analysis of High Accident Locations in Kalamazoo County | 01/01/1974 | RR-355-Report.pdf | ||
| RR-035 | 1972 Analysis of State Highway Accident Facts | 01/01/1974 | RR-035-Report.pdf | ||
| RR-356 | 1972 Analysis of State Highway Accident Facts | 01/01/1974 | RR-356-Report.pdf | ||
| RR-354 | An Evaluation of the 1965-66, 1966-67 Tree Removal Programs - Supplement | 01/01/1974 | RR-354-Report.pdf | ||
| RR-302 | Evaluation of Two Safety Projects for Curve Superelevation and Drainage Correction | 01/01/1973 | RR-302-Report.pdf | ||
| RR-307 | A Traffic Accident Analysis of High Accident Locations in the City of Portage | 01/01/1973 | RR-307-Report.pdf | ||
| RR-315 | Michigan Trunkline Accident Facts, an Evaluation of the States - 1971 Accident Experience | 01/01/1973 | RR-315-Report.pdf | ||
| RR-293 | Field Evaluation of A Flexible Traffic Guide Post | 10/01/1972 | RR-293-Report.pdf | ||
| RR-294 | Three Experiments with Transverse Pavement Stripes and Rumble Bars | 10/01/1972 | RR-294-Report.pdf | ||
| RR-287 | Michigan Trunkline Accident Facts, an Evaluation of the States - 1970 Accident Experience | 06/01/1972 | RR-287-Report.pdf | ||
| RR-286 | A Traffic Accident Analysis of High Accident Locations in the City of Adrian | 06/01/1972 | RR-286-Report.pdf | ||
| RR-282 | A Traffic Accident Analysis of High Accident Locations in the City of Niles | 04/01/1972 | RR-282-Report.pdf | ||
| RR-280 | A Traffic Accident Analysis of High Accident Locations in the City of Escanaba | 03/01/1972 | RR-280-Report.pdf | ||
| RR-264 | Study of the Operational Aspects of One-Way and Two-Way Streets | 01/01/1972 | RR-264-Report.pdf | ||
| RR-276 | A Traffic Accident Analysis of High Accident Locations in the City of Three Rivers | 01/01/1972 | RR-276-Report.pdf | ||
| RR-275 | An Investigation of Weather Factor Effects on Traffic Accidents | 01/01/1972 | RR-275-Report.pdf | ||
| RR-266 | A Traffic Accident Analysis of High Accident Locations in the City of Battle Creek | 01/01/1972 | RR-266-Report.pdf | ||
| RR-260 | Truck Speed Study: Evaluation of Hill-Climbing Ability of Motor Trucks | 11/01/1971 | RR-260-Report.pdf | ||
| RR-259 | A Traffic Accident Analysis of High Accident Locations in the city of Hancock | 10/01/1971 | RR-259-Report.pdf | ||
| RR-253 | A Traffic Accident Analysis of High Accident Locations in Marquette County | 07/01/1971 | RR-253-Report.pdf | ||
| RR-248 | An Evaluation of the 1965-66, 1966-67 Tree Removal Programs | 06/01/1971 | RR-248-Report.pdf | ||
| RR-249 | A Traffic Accident Analysis of High Accident Locations in the city of Ionia | 06/01/1971 | RR-249-Report.pdf | ||
| RR-251 | Investigation into Using Air in the Permeability Testing of Granular Soils | 06/01/1971 | RR-251-Report.pdf | ||
| RR-244 | Michigan Highway Safety Program - Maintenance Standards and Construction Area Practices | 03/01/1971 | RR-244-Report.pdf | ||
| RR-241 | A Traffic Accident Analysis of High Accident Locations in Montgomery County | 02/01/1971 | RR-241-Report.pdf | ||
| RR-242 | A Traffic Accident Analysis of High Accident Locations in St Joseph County | 02/01/1971 | RR-242-Report.pdf | ||
| RR-240 | A Traffic Accident Analysis of High Accident Locations in Mason County | 02/01/1971 | RR-240-Report.pdf | ||
| RR-233 | A Traffic Accident Analysis of High Accident Locations in the City of Dowagiac | 01/01/1971 | RR-233-Report.pdf | ||
| RR-232 | A Traffic Accident Analysis of High Accident Locations in Benzie County | 01/01/1971 | RR-232-Report.pdf | ||
| RR-231 | Widening a Four Lane Roadway to Five Lanes and Providing a Center Lane for Left Turns | 01/01/1971 | RR-231-Report.pdf | ||
| RR-228 | A Traffic Accident Analysis of High Accident Locations in Lapeer County | 12/01/1970 | RR-228-Report.pdf | ||
| RR-229 | A Traffic Accident Analysis of High Accident Locations in Osceola County | 12/01/1970 | RR-229-Report.pdf | ||
| RR-220 | A Traffic Accident Analysis of High Accident Locations in Tuscola County | 06/01/1970 | RR-220-Report.pdf | ||
| SPR-741 | An Evaluation of "Effective and Dependable" Reflectorization for Registration Plates | 05/01/1970 | SPR-741-Report.pdf | ||
| RR-218 | Procedures Manual for The Determination and Establishment of No Passing Zones | 03/01/1970 | RR-218-Report.pdf | ||
| RR-216 | Development of a an Internally Illuminated School Speed Limit Sign | 03/01/1970 | RR-216-Report.pdf | ||
| RR-198 | Accident Analysis and Cost Justification - Left Side Pennant Sign US-12 | 03/01/1969 | RR-198-Report.pdf | ||
| SPR-695 | Evaluation of Experimental Signs | M.H. Janson | 03/01/1969 | SPR-695-Report.pdf | |
| RR-193 | Study of the Operational Aspects of One Way and Two Way Streets | 01/01/1969 | RR-193-Report.pdf | ||
| RR-190 | Evaluation of Low Profile Lights for Pavement Delineation | 01/01/1969 | RR-190-Report.pdf | ||
| RR-184 | Evaluation of a Safety Project: Replacement of Bi-Directional Crossover with Pair of Directional Crossovers | 01/01/1969 | RR-184-Report.pdf | ||
| RR-191 | A Review of the Michigan Criteria for Marking No Passing Zones: 1968 | 01/01/1969 | RR-191-Report.pdf | ||
| RR-182 | Evaluation of a Safety Project ? Widening of M-17 from Four to Five Lanes | 12/01/1968 | RR-182-Report.pdf | ||
| SPR-678 | Office Memorandum: Report on Experimental Raised Traffic Markers on I-75 in Detroit | A. J. Permoda | 07/01/1968 | SPR-678-Report.pdf | |
| SPR-652 | Investigation of Rigid Fuse Plates for Use on Breakaway Signs (Progress Report) | E. L. Marvin | 11/01/1967 | SPR-652-Report.pdf | |
| SPR-610 | Impact Tests of Breakaway Light Poles | J.E. Simonsen, F. DeRose | 10/01/1966 | Breakaway supports, crash tests, luminaires, street lighting, testing | SPR-610-Report.pdf |
| SPR-601 | Office Memorandum: Break-Away-Sign Supports | E.A. Finney | 09/19/1966 | SPR-601-Report.pdf | |
| SPR-581 | Sign Brightness in Relation to Legibility | T.M. Allen, G.M. Smith, M.H. Janson | 08/01/1966 | Brightness; Environment; Field tests; Illuminated traffic signs; Legibility; Lettering; Night; Traffic signs | SPR-581-Report.pdf |
| RR-152 | Emergency Highway Traffic Regulation | 06/01/1966 | RR-152-Report.pdf | ||
| RR-143 | Study of No Passing Zone Signing | 05/01/1965 | RR-143-Report.pdf | ||
| SPR-499 | Anti-Glare Fence Specifications | B. W. Pocock | 02/22/1965 | SPR-499-Report.pdf | |
| RR-121 | Motorist Services for Michigan Freeways | 07/01/1963 | RR-121-Report.pdf | ||
| RR-119 | An Evaluation of Concrete Median Barrier in Michigan | 06/01/1963 | RR-119-Report.pdf | ||
| RR-118 | A Review of the Criteria of Marking No Passing Zones | 05/01/1963 | RR-118-Report.pdf | ||
| SPR-336 | Flasher Brightness at Selected Intersections | M.H. Janson, G.M. Smith | 06/01/1960 | SPR-336-Report.pdf | |
| RR-145 | Anti-Glare Screen Study | 10/01/1956 | RR-145-Report.pdf | ||
| RR-039 | Special 24-hour Classified Speed Study M-78 Station 1-5 | 10/01/1955 | RR-039-Report.pdf | ||
| RR-036 | Psychological Reactions of Drivers as Related to Highway Safety | 09/01/1954 | RR-036-Report.pdf | ||
| RR-030 | A Kitten on a Telephone Pole - A Report by Michigan People to Michigan People on How to Check Mounting Highway Injuries and Deaths | 03/01/1952 | RR-030-Report.pdf | ||
| RR-031 | Accident Experience in Relation to Road and Roadside Features | 03/01/1952 | RR-031-Report.pdf | ||
| RR-027 | How Roadside Features Affect Traffic Accident Experience - 2nd Progress Report | 09/01/1951 | RR-027-Report.pdf | ||
| RR-017 | Modern Design Reduces Accidents | 05/01/1947 | RR-017-Report.pdf | ||
| RR-007 | No Passing Zones | 01/01/1943 | RR-007-Report.pdf | ||
| RR-006 | The Effectiveness of Highway Delineators on Accident Occurrence | 01/01/1941 | RR-006-Report.pdf |