Traffic Engineering Division Instructional and Informational Memoranda
Work Zone Safety | HSIP Application/Procedure update | Traffic Engineering memoranda | MUTCD and Virginia Supplement
Listed below are the current VDOT Traffic Engineering Instructional and Informational Memoranda (IIMs). A list of revised and voided memoranda is also available on this website.
Contact Marc.Lipschultz@VDOT.Virginia.gov or VASupplement@VDOT.Virginia.gov with any questions about Traffic Engineering memoranda.
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Number |
Subject |
Last Revised |
Cross-Reference |
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Reporting Changes Affecting Highway-Rail Grade Crossing Inventory Data |
September 2018 |
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Establishment, Operation, and Maintenance of School Zone Speed Limits (SZSLs) |
March 2016 |
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Dry Fire Hydrants Signing |
August 1994 |
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Type B, Class VI Pavement Markings |
June 2014 |
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| TE-278.2 | Memorial/Dedication Signs for Bridges, Highways, and Highway Segments | December 2012 | |
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Watch for Children Signs |
October 2014 |
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Parking for Disabled Person(s) |
January 2015 |
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Proposed Roadway Improvement Sign |
August 2016 |
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Yellow Change Intervals and Red Clearance Intervals |
January 2013 |
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Low-Ground Clearance Highway Rail Grade Crossing Sign (W10-5) |
August 2016 |
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Engine Braking and Other Noise Restriction Signs |
August 2016 |
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CMS Out of Service Sign |
August 2016 |
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Clearview Font Lettering for Guide Signs |
March 2019 |
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Work Zone Traffic Control Training Procedures |
January 2017 |
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Traffic Signal Controller Actuated Warning Beacons |
May 2007 |
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Work Zone Speed Analysis |
November 2009 |
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Transportation Management Plan Requirements |
September 2019 |
IIM-LD-241.7 |
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Establishing Procedures for Shop Plans, Modifications, Maintenance, and Inspection of Traffic Structures |
July 2008 |
IIM-SB-82 |
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NCHRP 350 Test Requirements |
September 2016 |
IIM-LD-222.13 |
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Signing and Sealing of Traffic Engineering Plans and Documents by Licensed PE’s |
July 2017 |
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No Loitering Signs |
August 2009 (Reissued August 2016) |
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Speed Limit Change Process |
October 2014 |
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Guardrail System Upgrade |
March 2019 |
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Guardrail System Spot Repair |
March 2019 |
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Rumble Strips and Rumble Stripes |
September |
IIM-LD-212.7 |
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Warning Signs – Deer and Other Large Animal Crossing |
December 2011 (Reissued August 2016) |
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Variable Speed Limit Implementation Requirements and Guidance |
October 2014 |
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Pole-Mounted Speed Display Sign |
April 2013 |
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Maximum Span Length Limits for Ancillary Structures, and Bridge Parapet Mounts |
May 2021 |
IIM-SB-89.1 |
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Roles and Responsibilities for Compliance with the Americans with Disabilities Act, Curb Ramp Assessment, Curb Ramp Improvement |
October 2017 |
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Program for Americans with Disabilities Act Compliance of Department Right-of-Way Assets |
August 2014 |
CR-5 |
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| IIM-TE-378 | High Visibility Signal Backplates (HVSBs) | April 2016 | |
| TE-379 |
Overhead Street Name Signs (OSNS) | June 2016 | |
| TE-380.1 | Overhead Sign Lighting | May 2019 | |
| IIM-TE-381 |
Flashing Yellow Arrow Signal Indication for Permissive Left-Turn Movements | January 2016 | |
| VDOT Guidelines to AASHTO Standard Specifications for Structural Supports | April 2016 | IIM-SB-90.2 | |
| IIM-TE-383 | Request for Marking VDOT Utility Location | March 2016 | IIM-TMPD-541 IIM-OD-16-01 |
| IIM-TE-384.1 | Pedestrian Crossing Accommodations at Unsignalized Locations | August 2022 | |
| IIM-TE-385 | Roles and Responsibilities of District Traffic Engineers (DTEs) | January 2017 | |
| Guidelines for the use of Portable Temporary Rumble Strips (PTRS) | May 2021 | IIM-TE-386.1 | |
| IIM-TE-387.1 | Requirements for Signal Justification Reports (SJRs) for New and Reconstructed Signals | November 2019 | |
| IIM-TE-388 | Accessible Pedestrian Signals and Accessible Pedestrian Signal Detectors | December 2017 | |
| Innovative Intersections Committee | May 2018 | IIM-LD-257 | |
| Roadway Lighting | May 2019 | ||
| Pavement Shoulder Wedge | February 2020 |
IIM-MD-002.1 | |
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Design and Installation of WORK ZONE NO HANDHELD |
October 2019 | |
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Pavement Marker Usage in VDOT Projects, Permit, and Maintenance Activities |
October 2020 | |
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Flashing Beacons |
September 2020 |
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Temporary Pavement Marking Width and Materials |
February 2021 |
Memoranda issued by some other VDOT Divisions are available at:
- Location and Design Division Instructional and Informational Memoranda
- Operations Division Instructional and Informational Memoranda
- Structures and Bridge Division Instructional and Informational Memoranda
- Office of Land Use Instructional and Informational Memoranda
- Construction Division Instructional and Informational Memoranda