Tennessee, United States
Content that references this location
Signal System Upgrades at Intersections on Tennessee’s I-24 Smart Corridor Reduced Overall Crashes by Up to 30 Percent.
METHODOLOGY
Data used for the project included traffic speed, volume, occupancy, travel time, and crash information collected by TDOT and third-party vendors. Project evaluation was based on the…
Content type
Date Posted
07/28/2026
Taxonomy (ARC-IT)
Traffic Signal Control (TM03),
Traffic Metering (TM05),
Variable Speed Limits (TM20)
Geolocation links
In Tennessee, a low visibility warning system installed on I-75 dramatically reduced fog-related crashes.
Managers with TDOT and TDS employed both advisory and control strategies to implement the warning system. Advisory strategies provide information on prevailing and predicted conditions and control…
Content type
Date Posted
08/05/2008
Geolocation links
In Tennessee, a fog detection and warning system implemented in 1994 significantly improved safety as no fog-related accidents have occurred since implementation.
Center managers select pre-programmed DMS messages (see table below), pre-recorded HAR messages, and appropriate speed limits (i.e., 50 mph or 35 mph) based upon response scenarios proposed by the…
Content type
Date Posted
01/01/2001
Taxonomy (ARC-IT)
Roadway Automated Treatment (MC03),
Traffic Signal Control (TM03),
Traffic Information Dissemination (TM06),
Variable Speed Limits (TM20),
Broadcast Traveler Information (TI01),
Weather Information Processing and Distribution (WX02),
Spot Weather Impact Warning (WX03)
Geolocation links
Deploy system-wide data integration and conduct a data quality assessment to support the successful development and operation of an integrated corridor.
The study noted the following lessons learned:
Highlight a corridor as an interdependent system and conduct ongoing public outreach, education, and sentiment monitoring to guide outreach and…
Content type
Date Posted
07/28/2026
Taxonomy (ARC-IT)
Traffic Signal Control (TM03),
Traffic Metering (TM05),
Variable Speed Limits (TM20)
Geolocation links
Recognize that the Smart InfraRed Inspection System has promise for increasing productivity of inspection personnel but not yet ready for national deployment due to lack of accuracy in flagging commercial vehicles with potential defects.
During the course of the field operational test (FOT), 413 commercial motor vehicles (CMVs) were given a North American Standard (NAS) Level-1 inspection. Of those 413 CMVs, 384 were subjected to a…
Content type
Date Posted
10/27/2011
Geolocation links
Leased fiber optic services that include favorable maintenance agreements can be more cost effective than owned services that have high maintenance costs.
The Federal Highway Transportation report entitled Guidelines for Transportation Management Systems Maintenance summarized traffic management systems (TMS) maintenance practices utilized by state and…
Content type
Made Public Date
10/29/2008
Taxonomy (ARC-IT)
Infrastructure Monitoring (MC09),
Transportation Infrastructure Protection (PS09),
Roadside Lighting (ST04),
Connected Vehicle System Monitoring and Management (SU01),
Core Authorization (SU02),
Map Management (SU04),
Location and Time (SU05),
Object Registration and Discovery (SU06),
ITS Communications (SU07),
Security and Credentials Management (SU08),
Device Certification and Enrollment (SU09),
Center Maintenance (SU10),
Field Equipment Maintenance (SU11)
Geolocation links
