TDOT Standard Traffic Design Drawings
Created November 22, 2017SIGNS
SIGNALS
LIGHTING AND UTILITY POLES
RAILROAD CROSSINGS
PAVEMENT MARKINGS
WORK ZONES
| SIGNS | ||
|---|---|---|
DRAWING | REVISION DATE | DESCRIPTION |
07/30/2025 | STANDARD MOUNTING DETAILS - BOLTED EXTRUDED PANELS | |
07/30/2025 | STANDARD LAYOUT GROUND MOUNTED SIGNS | |
07/30/2025 | STANDARD MOUNTING DETAILS FLAT SHEET SIGNS ALUMINUM-STEEL DESIGN | |
07/30/2025 | DELINEATOR AND MILEPOST DETAILS | |
07/30/2025 | STANDARD STEEL GROUND MOUNTED SIGNS, BREAK-AWAY TYPE POST FOOTING DETAILS, SQUARE TUBES | |
07/30/2025 | I-BEAM BREAK-AWAY LARGE SIGN SUPPORT DETAILS | |
07/30/2025 | WF-BEAM BREAK-AWAY LAREG SIGN SUPPORT DETAILS | |
07/30/2025 | STANDARD CONDUIT & GROUND DETAILS FOR OVERHEAD & CANTILEVER SIGN STRUCTURES | |
07/30/2025 | GROUND MOUNTED ROADSIDE SIGN PLACEMENT DETAILS | |
T-S-16A (REMOVED) | 7/31/2026 (REMOVED) | GROUND MOUNTED ROADSIDE SIGN PLACEMENT DETAILS |
07/30/2025 | STANDARD GROUND MOUNTED SIGN USING PERFORATED/KNOCKOUT SQUARE TUBE | |
08/31/2026 | END OF ROADWAY AND DEAD END SIGNS, METAL BARRICADES (TYPE III) | |
07/30/2025 | STANDARD STEEL SIGN SUPPORTS | |
07/30/2025 | SIGN DETAILS | |
07/30/2025 | DETAILS FOR SIGNS MOUNTED ON CONCRETE MEDIAN BARRIERS | |
07/30/2025 | SIGN LAYOUT FOR HOV LANES | |
07/30/2025 | MULTI-DIRECTIONAL SLIP BASE BREAKAWAY P-POST SIGN SUPPORT | |
07/30/2025 | MULTI-DIRECTIONAL SLIP BASE BREAKAWAY STRUCTURAL PIPE SIGN SUPPORT | |
07/30/2025 | BREAKAWAY POST SIGN SUPPORTS | |
08/31/2026 | DETAILS OF SIGN WITH SOLAR FLASHING ASSEMBLY | |
| T-S-25 | 07/30/2025 | SIGNING PLAN DETAILS FOR ROUNDABOUTS |
| T-S-26 | 07/30/2025 | SIGNING PLAN FOR RESTRICTED CROSSING & J-TURN INTERSECTIONS |
DRAWING | REVISION DATE | DESCRIPTION |
12/18/2025 | WOOD POLE DETAILS FOR SPAN MOUNTED SIGNALS | |
T-SG-2 | 12/18/2025 | LOOP LEAD-INS, CONDUIT AND PULL BOXES |
12/18/2025 | INDUCTIVE LOOP DETECTION DETAILS | |
12/18/2025 | INDUCTIVE LOOP DETECTION DETAILS And NOTES | |
| T-SG-3B | 08/31/2026 | ALTERNATE DETECTION DETAILS |
12/18/2025 | SPAN WIRE AND MESSENGER CABLE DETAILS | |
12/18/2025 | CONTROLLER CABINET DETAILS | |
12/18/2025 | PEDESTRIAN SIGNAL DETAILS | |
| T-SG-6A | 08/31/2026 | TYPE A PEDESTAL POLE DETAILS |
| T-SG-6B | 08/31/2026 | TYPE B PEDESTAL POLE DETAILS |
| T-SG-6C | 08/31/2026 | TYPE C PEDESTAL POLE DETAILS |
12/18/2025 | SIGNAL HEAD ASSEMBLIES | |
| 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT APPROACHES WITH NO THROUGH MOVEMENTS | |
| 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT APPROACHES WITH NO THROUGH MOVEMENTS | |
| 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT ONE-LANE AND TWO-LANE APPROACHES | |
| 1/21/2026 | TYPICAL SIGNAL HEAD PLACEMENT TWO-LANE APPROACHES | |
| 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT THREE-LANE APPROACHES | |
| 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT THREE-LANE APPROACHES | |
| 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT THREE-LANE APPROACHES | |
| T-SG-7H | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT THREE-LANE AND FOUR-LANE APPROACHES |
| T-SG-7HH | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FOUR-LANE APPROACHES |
| T-SG-7J | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FOUR-LANE APPROACHES |
| T-SG-7K | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FOUR-LANE APPROACHES |
| T-SG-7L | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FOUR-LANE APPROACHES |
| T-SG-7M | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FIVE-LANE APPROACHES |
| T-SG-7N | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FIVE-LANE APPROACHES |
| T-SG-7NN | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FIVE-LANE APPROACHES |
| T-SG-7P | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FIVE-LANE APPROACHES |
| T-SG-7PP | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT FIVE-LANE APPROACHES |
| T-SG-7R | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT SIX-LANE APPROACHES |
| T-SG-7S | 12/18/2025 | TYPICAL SIGNAL HEAD PLACEMENT SIX-LANE AND SEVEN-LANE APPROACHES |
| T-SG-8 | 12/18/2025 | STRAIN POLE DETAILS FOR SPAN MOUNTED SIGNALS |
| T-SG-9 | 12/18/2025 | CANTILEVER SIGNAL SUPPORT DETAIL |
| T-SG-9A | 12/18/2025 | MISCELLANEOUS SIGNAL DETAILS |
| T-SG-10 | 12/18/2025 | MAST ARM POLE AND STRAIN POLES FOUNDATION DETAILS |
| T-SG-11 | 12/18/2025 | MAINTENANCE OF EXISTING SIGNALS DURING HIGHWAY CONSTRUCTION |
| T-SG-12 | 12/18/2025 | TYPICAL WIRING FOR SIGNAL HEADS AND DETECTION LOOPS |
| T-SG-13 | 08/31/2026 | FLASHING BEACON DETAIL |
| T-SG-14 | 12/18/2025 | PEDESTRIAN HYBRID BEACON DETAIL, 2 OR 3 LANE FACILITIES |
| T-SG-15 | 12/18/2025 | PEDESTRIAN HYBRID BEACON DETAIL, MULTI-LANE FACILITIES |
DRAWING | REVISION DATE | DESCRIPTION |
| FIBER OPTIC AERIAL ENTRANCE DETAILS | |
| FIBER OPTIC UNDERGROUND ENTRANCE DETAILS | |
| FIBER OPTIC AERIAL CONNECTION DETAILS | |
| FIBER OPTIC PULL BOX, CABINET & POLE DETAILS | |
| 7/15/2024 | STANDARD LIGHTING FOUNDATION DETAILS | |
7/15/2024 | STANDARD LIGHTING DETAILS FOR SINGLE ARM SUPPORTS | |
7/15/2024 | STANDARD LIGHTING DETAILS TENON MOUNTED OFFSET LIGHTING SUPPORTS | |
7/15/2024 | FOUNDATION DETAIL FOR LUMINAIRE MOUNTED ON CONCRETE MEDIAN BARRIER | |
7/15/2024 | STANDARD LIGHTING DETAILS PULL BOXES | |
7/15/2024 | STANDARD LIGHTING DETAILS CONDUIT, CABLE INSTALLATION | |
| T-L-5 | STANDARD LIGHTING DETAILS CONTROL CENTER DETAILS | |
DRAWING | REVISION DATE | DESCRIPTION |
CROSSBUCK ASSEMBLY FOR PASSIVE RAILROAD CROSSINGS | ||
GRADE CROSSING WARNING SIGNS AND PAVEMENT MARKINGS | ||
GRADE CROSSING ADVANCE WARNING SIGN AND RR PAVEMENT MARKINGS | ||
CLEARANCE OF ACTIVE TRAFFIC CONTROL DEVICES FOR GRADE CROSSINGS | ||
DRAWING |
| REVISION DATE | DESCRIPTION |
01/24/2025 | DETAILS OF PAVEMENT MARKINGS FOR CONVENTIONAL ROADS AND MARKING ABBREVIATIONS | ||
| 01/24/2025 | DETAILS OF PAVEMENT MARKINGS FOR CONVENTIONAL ROADS | ||
01/24/2025 | MARKING STANDARDS FOR TRAFFIC ISLANDS, PAVED SHOULDERS AND MEDIANS FOR CONVENTIONAL ROADS | ||
08/31/2026 | STANDARD INTERSECTION PAVEMENT MARKINGS | ||
| T-M-4A | 08/31/2026 | STANDARD UNSIGNALIZED MID-BLOCK CROSSING | |
| T-M-4A2 | STANDARD RECTUANGULAR RAPID FLASHING BEACON (RRFB) COMMERCIAL AND STREET ENTRANCES | ||
| T-M-4B | 08/31/2026 | STANDARD SIGNALIZED MID-BLOCK CROSSING | |
| T-M-4B2 | STANDARD PEDESTRIAN HYBRID BEACON AT CROSSINGS AT COMMERCIAL AND STREET ENTRANCES | ||
| T-M-4C | 08/31/2026 | PEDESTRIAN GATEWAY TREATMENT | |
01/24/2025 | MARKING DETAIL FOR FREEWAYS | ||
01/24/2025 | MARKING DETAIL FOR EXPRESSWAY & FREEWAY INTERCHANGES | ||
01/24/2025 | GORE MARKING DETAILS FOR EXPRESSWAY & FREEWAY INTERCHANGES | ||
01/24/2025 | MARKING DETAILS FOR EXPRESSWAYS & FREEWAYS | ||
01/24/2025 | PAVEMENT MARKING AND SIGNING DETAILS FOR RAMP INTERSECTIONS | ||
| T-M-9A | 01/24/2025 | PAVEMENT MARKING AND SIGNING DETAILS FOR RAMP INTERSECTIONS | |
| T-M-9B | 07/22/2025 | PAVEMENT MARKING AND SIGNING DETAILS FOR RAMP INTERSECTIONS | |
| 01/24/2025 | ASPHALT SHOULDER RUMBLE STRIP INSTALLATION DETAILS FOR INTERSTATES AND ACCESS CONTROLLED ROUTES | ||
01/24/2025 | ASPHALT SHOULDER RUMBLE STRIP INSTALLATION DETAILS FOR NON-ACCESS CONTROLLED RURAL ROUTES | ||
01/24/2025 | RUMBLE STRIPE INSTALLATION LAYOUT | ||
01/24/2025 | RUMBLE STRIPE DETAILS FOR EDGE OF PAVEMENT AND CENTERLINE | ||
| T-M-16B | MUMBLE STRIP/STRIPE DETAILS FOR EDGE OF PAVEMENT | ||
01/24/2025 | PAVEMENT MARKING DETAILS FOR ROUNDABOUTS | ||
| T-M-18 | 07/31/2026 | FLEXIBLE DELINEATOR DETAILS | |
| T-M-18A | 07/31/2026 | DELINEATOR MOUNTING DETAILS | |
| T-M-19 | 01/24/2025 | PAVEMENT MARKING DETAILS FOR RESTRICTED CROSSING & J-TURN INTERSECTIONS | |
| DRAWING | REVISION DATE | DESCRIPTION | |
03/26/2025 | ADVANCE ROAD WORK SIGNING ON HIGHWAYS AND FREEWAYS | ||
03/26/2025 | ONE LANE CLOSURE DETAIL FOR DIVIDED HIGHWAYS | ||
03/26/2025 | ONE LANE CLOSURE DETAIL FOR BRIDGES ON DIVIDED HIGHWAYS | ||
| 03/26/2025 | TWO-OUTSIDE LANE CLOSURE FOR EXPRESSWAY AND FREEWAYS | ||
| 03/26/2025 | TWO-OUTSIDE LANE CLOSURE FOR INTERSTATES AND EXPRESSWAYS | ||
| 03/26/2025 | INTERIOR LANE CLOSURE FOR EXPRESSWAYS AND FREEWAYS | ||
| 03/26/2025 | LANE SHIFT FOR DIVIDED HIGHWAYS AND FREEWAYS | ||
| 03/26/2025 | SHOULDER CLOSURE DETAIL FOR FREEWAYS AND DIVIDED HIGHWAYS | ||
| 03/26/2025 | MEDIAN CROSS-OVER DETAIL ON FREEWAYS | ||
03/26/2025 | GEOMETRIC MEDIAN CROSS-OVER DETAIL ON DIVIDED HIGHWAYS | ||
| 03/26/2025 | LANE CLOSURE WITH LEFT HAND MERGE AND LANE SHIFT | ||
| T-WZ-22 | ONE LANE CLOSURE DETAIL FOR UNDIVIDED HIGHWAYS | ||
03/26/2025 | TRAFFIC CONTROL 2-LANE, 2-WAY DIVERSION (40 MPH OR LESS) | ||
03/26/2025 | TRAFFIC CONTROL 2-LANE, 2-WAY DIVERSION (GREATER THAN 40 MPH) | ||
03/26/2025 | TRAFFIC CONTROL PLAN SIGNAL LAYOUT FOR TRAFFIC SIGNAL AT TWO LANE BRIDGE RECONSTRUCTION SITE | ||
03/26/2025 | TRAFFIC CONTROL PLAN FOR CLOSE INTERSECTION CONDITIONS USING TRAFFIC SIGNAL AT TWO LANE BRIDGE RECONSTRUCTION SITE | ||
03/26/2025 | TRAFFIC CONTROL PLAN GENERAL NOTES FOR TRAFFIC SIGNAL AT TWO LANE BRIDGE RECONSTRUCTION SITE | ||
03/26/2025 | TRAFFIC CONTROL PLAN PAY ITEM AND SIGN DETAILS FOR TRAFFIC SIGNAL AT TWO LANE BRIDGE RECONSTRUCTION SITE | ||
| 03/26/2025 | LANE CLOSURE ON LOW-VOLUME 2-LANE HIGHWAY | ||
| 03/26/2025 | RIGHT LANE CLOSURES AT NEAR SIDE OF INTERSECTIONS | ||
| 03/26/2025 | LEFT LANE CLOSURES AT NEAR SIDE OF INTERSECTIONS | ||
| 03/26/2025 | CENTER LANE CLOSURES AT NEAR SIDE OF INTERSECTIONS | ||
T-WZ-50 (REMOVED) | REMOVED 4/30/2025 | TRAFFIC CONTROL FOR SIGNALS ONLY PROJECTS ON 2 OR 3 LANE MAJOR ROUTES | |
T-WZ-51 (REMOVED) | REMOVED 4/30/2025 | TRAFFIC CONTROL FOR SIGNALS ONLY PROJECTS ON 4 OR 5 LANE MAJOR ROUTES | |
T-WZ-52 (REMOVED) | REMOVED 4/30/2025 | TRAFFIC CONTROL FOR SIGNALS ONLY PROJECTS ON 4 OR 5 LANE MAJOR AND MINOR ROUTES | |
T-WZ-53 (REMOVED) | REMOVED 4/30/2025 | TRAFFIC CONTROL FOR SIGNALS ONLY PROJECTS ON 4 OR MORE LANE DIVIDED MAJOR ROUTES | |
T-WZ-54 (REMOVED) | REMOVED 4/30/2025 | TRAFFIC CONTROL FOR SIGNALS ONLY PROJECTS ON 4 OR MORE LANE DIVIDED MAJOR ROUTES AND 4 OR MORE LANE MINOR ROUTES | |
03/26/2025 | SIDEWALK TRAFFIC CONTROL | ||
| T-WZ-56 | 03/26/2025 | TRANSVERSE RUMBLE STRIP USE WITHIN WORK ZONES | |
| T-WZ-60 | 03/26/2025 | FREEWAY RESURFACING SIGNING PROCEDURES | |
| T-WZ-61 | 03/26/2025 | ROLLING ROADBLOCK DETAIL FOR DIVIDED HIGHWAYS | |
| T-WZ-62 | 07/31/2026 | CONSTRUCTION ACCESS/EMERGENCY PULL-OFF ON FREEWAYS | |
| T-WZ-63 | 03/26/2025 | WORK ZONE IN THE VICINITY OF AN ENTRANCE RAMP | |
| T-WZ-64 | 03/26/2025 | WORK ZONE IN THE VICINITY OF AN EXIT RAMP | |
| T-WZ-65 | 03/26/2025 | LANE CLOSURE WITH LATE MERGE | |
| T-WZ-FAB1 | 03/26/2025 | FLASHING YELLOW ARROW BOARD | |
| T-WZ-PBR1 | 03/26/2025 | INTERCONNECTED PORTABLE BARRIER RAIL | |
| T-WZ-PBR2 | 03/26/2025 | DETAILS FOR WORK ZONE CHANNELIZATION DEVICES | |
| T-WZ-PCB1 | 03/26/2025 | 10 FOOT PORTABLE CONCRETE BARRIER RAIL | |
| T-WZ-PCB2 | 03/26/2025 | 20 FOOT PORTABLE CONCRETE BARRIER RAIL | |
| T-WZ-PCB2A | 03/26/2025 | 20 FOOT PORTABLE CONCRETE BARRIER RAIL STIFFENER TUBE | |
| T-WZ-PCB3 | 03/26/2025 | PORTABLE CONCRETE BARRIER RAIL DETAILS | |
| T-WZ-PCB4 | 07/22/2025 | PORTABLE CONCRETE BARRIER RAIL ANCHOR PIN DETAILS | |
If you find any mistakes, missing information or have a question, contact:
Traffic Design Division
Stephen K. Byran, P.E., PTOE
Phone: 615-741-2152
Steve.Bryan@tn.gov
Or
Mary McFarlin, P.E.
Phone: 615-741-9315
Mary.D.McFarlin@tn.gov
312 Rosa L. Parks Avenue
William R. Snodgrass Bldg., 20th floor
Nashville, TN 37243
This Page Last Updated: October 8, 2026 at 12:08 PM