ITE Journal - April 2020 - 25

The technology is scalable too. Georgia DOT has
designed the system to work in an interoperable
standards-based environment that uses non-proprietary technology through the 5.9 GHz safety spectrum.
Whether the mission is to establish transit priority,
freight priority or signal preemption, or to alert about
road weather conditions or work zones, the system
needs to function properly. The long-term goal is to
enable a baseline level of connectivity of our infrastructure throughout the state, in conjunction with local and
private partners, to improve safety and mobility.
Affordable Option for Safety. GDOT is funding
the full deployment of the initial regional program
(1,600 signals), in coordination with an awarded federal
Advanced Transportation and Congestion Management
Grant, at a total investment level of approximately $7
million USD. That money goes towards deploying and
developing the whole spectrum of connected vehicle
infrastructure to support equitable access to data and
applications to support connected vehicles.
Part of the Bigger Picture. Connected vehicle
technology is just part of the larger transportation
infrastructure. GDOT's connected vehicle program is
housed within the Regional Traffic Operations Program
(RTOP), a multi-jurisdictional, cutting-edge signal
timing program. The goal of RTOP is to improve traffic
flow and reduce vehicle emissions through improved
signal timing. Georgia DOT provides signal timing
experts focused solely on Atlanta's busiest arterial roadways. RTOP also assists local jurisdictions to quickly
find and repair problems.
GDOT views the deployment of connected vehicle
technology as the continued evolution of our infrastructure. Combining the deployment of CV technology
with RTOP allows the Department to leverage already
existing resources and be efficient in pushing regionally
scaled programs.
In Partnership with Local Governments. To
diversify and to expand off the RTOP network, Georgia
DOT's Regional Connected Vehicle partnership with
the ARC provides for necessary infrastructure configuration, deployment, and support over several years
with numerous participating local governments in a
multi-phase arrangement. The intention is for future
deployments as participation and funds allow.
The GDOT-ARC program targets an additional 1,000
connected vehicle locations across the metro Atlanta
region to add to the initial 1,600.

This subsequent program will use both the proven
DSRC technology, as well as cellular vehicle-to-everything-communication (C-V2X) all within the 5.9 GHz
safety spectrum. Like the original deployment, this program has regional and national interoperability. It will
be pursued through a competitive procurement process.
Though the list of possible applications from connected vehicle technologies is long, the GDOT-ARC
vehicle-to-infrastructure application targets these
priorities: signal phasing and timing broadcast (SPaT),
map data (MAP) message broadcast, emergency vehicle
preemption, transit signal priority, freight signal priority
and non-intersection-based applications such as traveler
information messages.
Innovation on The Ray on I-85. Finally, one of
GDOT's most innovative partnerships is a pilot project
on I-85 with Panasonic, the Federal Highway Administration, and The Ray, a living transportation laboratory.
On the Ray's 18-mile stretch of rural interstate in
West Point, GA are six roadside units broadcasting
through C-V2X technology. As part of the project,
four demo vehicles are equipped with on-board units
to broadcast basic safety messages. This project along
a rural interstate corridor enables various connected
vehicle applications such as queue alerts and road
weather alerts. GDOT also utilizes Panasonic's CIRRUS
data platform to ingest and act upon data collected from
suitably-equipped vehicles.
Goal to Ultimately Connect All of Georgia
with CV Technology. Georgia DOT has been a leader
in connected technology infrastructure (CTI) for almost
two years with the goal to positively impact safety and
mobility on all Georgia roads. Through a combination of
self-funded initiatives, multiple department and jurisdictional programs and innovative pilot projects, GDOT is
deploying the best technology for today, while constantly
preparing for whatever the future may bring. itej
Andrew Heath, P.E. (M) is Georgia
Department of Transportation's state traffic
engineer. He leads the Office of Traffic Operations, where he focuses on addressing
congestion and reducing roadway fatalities.
He has been with GDOT for 12 years. Heath has a bachelor's
and a master's in civil engineering from Auburn University.
He is a licensed professional engineer in Georgia.   

References
1.	 2016 Fatal
Motor Vehicle
Crashes Report,
National Highway
Traffic Safety
Administration,
U.S. Department
of Transportation,
October 2017.
https://crashstats.
nhtsa.dot.gov/
Api/Public/View
Publication/
812456. (Accessed
February 28, 2020).
2.	 "Proposed rule
would mandate
vehicle-tovehicle (V2V)
communication
on light vehicles,
allowing cars to
'talk' to each other
to avoid crashes."
National Highway
Traffic Safety
Administration,
U.S. Department
of Transportation,
December 13,
2016. https://
one.nhtsa.gov/
About-NHTSA/
Press-Releases/
ci.nhtsa_v2v_
proposed_
rule_12132016.
print. (Accessed
February 28, 2020).

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https://crashstats.nhtsa.dot.gov/Api/Public/View Publication/812456 https://one.nhtsa.gov/About-NHTSA/Press-Releases/ci.nhtsa_v2v_proposed_rule_12132016.print https://one.nhtsa.gov/About-NHTSA/Press-Releases/ci.nhtsa_v2v_proposed_rule_12132016.print http://www.ite.org

ITE Journal - April 2020

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