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ITS SmartWay Expansion

The purpose of the TDOT SmartWay system is to reduce traffic congestion, provide motorist traffic information, and to improve operational efficiency, effectiveness, and safety on Tennessee’s roadways. To meet the growing needs of motorists, TDOT is expanding the SmartWay system.

The following expansion projects are either under construction or under development to improve the currently fully-integrated intelligent transportation systems in Memphis, Nashville, Chattanooga, and Knoxville.

Location Route Length Equipment
REGION 1 (Knoxville)      
Knox Co SR 115
LM 2.4 to LM 3.8
1.40 miles Conduit for future expansion
REGION 2 (Chattanooga)      
Coffee, Grundy, Marion Co I-24
MM 93.6 to MM 110.2
47.8 miles 16 CCTV
7 DMS
6 RDS
Hamilton Co I-124
MM 0 to MM 2
1.40 miles Relocate ITS
Reposition RDS
REGION 3 (Nashville)      
Davidson, Rutherford Co I-24
MM 58 to 85.6
SR 840
MM 28 to MM 35.5
31.3 miles 24 CCTV
9 DMS
7 RDS
Davidson, Sumner, Robertson Co I-65
MM 96.6 to MM 110.2
16.6 miles 9 CCTV
4 DMS
Davidson, Williamson Co I-65
MM 57.6 to MM 76
SR 840
MM 50 to MM 57
25.4 miles 15 CCTV
3 DMS
20 RDS
Davidson Co I-24 / I-40 / SR 386
multiple locations
4.95 miles 4 CCTV
2 DMS
4 RDS
Wilson Co I-40
MM 232 to MM 235
3.56 miles Conduit for future expansion
Davidson Co I-40
MM 205
0.40 miles Relocate DMS
REGION 4 (Memphis)      
Shelby Co I-40
MM 16 to MM 20
4.53 miles Add mainline fiber
Connect existing ITS devices
Shelby Co I-40
MM 20 to MM 25
4.00 miles Add mainline fiber
Connect exiting ITS devices
Madison Co I-40
MM 82.1 to MM 87
4.57 miles Conduit for future expansion
Madison Co I-40
MM 78 to MM 80
1.62 miles Conduit for future expansion
Madison Co I-40
MM 78 to MM 80
2.14 miles Conduit for future expansion
Shelby Co I-55
MM 11 to MM 12
0.70 miles 1 CCTV
1 RDS
Fayette Co I-40
MM 28
0.68 miles Conduit for future expansion

MM = Mile Marker    CCTV = Closed Circuit Television    DMS = Dynamic Message Sign    RDS = Radar Detection System

HELP Program Expansion

 TDOT Announces HELP Program Expansion

HELP Program routes ultimately share the same boundaries as the rest of the TDOT SmartWay system in each of the four urban areas.

In 2014, TDOT received a grant through the Congestion Mitigation and Air Quality Control program (CMAQ) to expand the Department's HELP program. The CMAQ program funds transportation projects that reduce air emissions from on-road sources (cars, trucks, buses). The HELP program helps reduce air emissions by removing minor incidents from the roadway, which relieves congestion and prevents vehicles from idling. The grant will provide $5.5 million over a three-year period, which will provide 21 new vehicles and 21 new operators statewide.

Below is a breakdown of the proposed expansion as it relates to each region. To view current HELP routes, please refer to the HELP Program materials under the Traffic Operations section of the TDOT website.

Region 1 (Knoxville)
Knoxville HELP currently consists of 14 highway response operators staffing four major established high-volume routes. The proposal of one (1) additional route will allow service to be extended along the I-40 corridor, where ADT ranges from 72,000 (extension) to 104,000 (existing route). The proposed route is as follows.

  • I-40 west of Knoxville - extend coverage an additional 4 miles from mile marker 373 to mile marker 369 (Watt Road)
  • I-40 east of Knoxville - extend coverage an additional 4 miles to end at Exit 398 (Strawberry Plains Pike)

The proposed extension would require one HELP operator and one truck per shift, for a total of three (3) additional operators/trucks.

Region 2 (Chattanooga)
Chattanooga HELP currently consists of 14 highway response operators staffing six major established high-volume routes. The proposal of one (1) additional route will allow service to be extended along the I-24 corridor, where ADT is in excess of 70,000. The proposed route is as follows.

  • I-24 west of Chattanooga - extend coverage an additional 9 miles from the TN-GA state line to Exit 169 in Georgia

The proposed extension would require one HELP operator and one truck per shift, for a total of three (3) additional operators/trucks.

Region 3 (Nashville)
Nashville HELP currently consists of 24 highway response operators staffing six major established high-volume routes. The proposal of three (3) additional routes will allow service to be extended along two of the heaviest traveled corridors, where ADT is in excess of 90,000 vehicles per day. The proposed routes are as follows.

  • I-24 east of Nashville - extend coverage an additional 23 miles from Exit 57 (Harding Place) to Exit 78 (SR 96) in Murfreesboro, Rutherford County
  • I-65 south of Nashville - extend coverage an additional 13 miles from Exit 78 (Harding Place) to Exit 65 (SR 96) in Franklin, Williamson County

The proposed extension would require three HELP operators and three trucks per shift, for a total of nine (9) additional operators/trucks.

Region 4 (Memphis)
Memphis HELP currently consists of 19 highway response operators staffing five major established high-volume routes. The proposal of two (2) additional routes will allow service to be extended along two of the heaviest traveled corridors, where ADT  ranges from 90,000 (I-40) to 150,000 (I-240). The proposed routes are as follows.

  • I-40 and I-55 Mississippi River Crossings
  • I-240 Loop

The proposed extension would require two HELP operators and two trucks per shift, for a total of six (6) additional operators/trucks.