ITE Journal - April 2020 - 40

Uses of the Safety Spectrum
V2V: "Vehicle-to Vehicle"
Messages are broadcast rapidly from each vehicle (as often as
10 times per second). Vehicles receiving the messages use this
information to predict potential collisions and warn the driver to
take action (or eventually initiate action with automated driver
assist functions).
V2I: "Vehicle-to-Infrastructure"
V2I technology at the roadside can enable wireless notification of
traffic signal information; work zone locations; lane closures; and
other possible roadway interference to enhance safety and reduce
congestion. There are several uses for the 5.9 GHz safety spectrum
for V2I communications, including but not limited to:
*	 Emergency vehicle preemption of traffic signals
*	 Traffic congestion detection
*	 Red-light violation warnings
*	 Reduced speed zone warnings
*	 Curve speed warnings
*	 Spot weather-impact warnings
*	 Automatic toll collection
*	 Other safety-critical applications
V2X: "Vehicle-to-Everything" - The collective of V2V, V2I,
and connections with other transportation system users
such as pedestrians
There are numerous possible future uses of V2X for automated
driving systems (ADS) which would greatly enhance mobility
and safety, paving the way for fully autonomous driving. Some
possible uses of V2X include:
*	 Commercial Vehicle Platooning
*	 Coordinated Intersection Movement Assist
*	 Notify ADS vehicles of approaching police and emergency
vehicles
*	 Send wireless notifications of traffic signal and other roadside
messages to enhance situational awareness for automated
vehicles
*	 And other new and innovative features and applications

shutterstock/ Infinity32829

Source: U.S. Department of Transportation,
https://www.transportation.gov/content/safety-band

40

Apri l 2020

i te j o urn al

potential and has made comments in support of freeing up its use,
noting that the FCC's "bet on DSRC didn't pan out the way we
thought it would."12
Then in May 2019 at the Wi-Fi World Congress, FCC Chairman
Pai made the initial announcement that the agency was considering
changing the use of the safety spectrum. He stated that the FCC
would propose opening-up the lower 45 MHz of the 5.9 GHz band
for unlicensed operations to support high-throughput broadband
applications, such as Wi-Fi. The upper 20 MHz would be allocated
for C-V2X automotive communications technology. With the
remaining 10 MHz, the FCC would seek comment on whether to
retain it for DSRC or dedicate the segment to C-V2X.5
Support for the Spectrum. For more than two years, organizations including ITE have repeatedly called on the FCC to protect
the ability for the transportation community to utilize the safety
spectrum for transportation safety applications without the
probability of interference by allowing unlicensed Wi-Fi devices in
the lower portion of the band. 
"At a time when connected and automated vehicle technologies
are just emerging into the marketplace...removing or compromising the 5.9 GHz spectrum set‐aside for transportation safety
purposes could hinder the development of safety applications
and hamper our ability to save lives,"13 wrote Jeff Paniati, ITE
CEO and executive director, in a press release. This is in line with
ITE's position on connected and automated vehicles that includes
support for fully protecting the currently designated 5.9 GHz safety
spectrum for use by CAV applications and services.
AASHTO executive director Jim Tymon reiterated that
sentiment. "The 5.9 GHz band has been part of the spectrum that
has been reserved for use for life-saving transportation technologies...at a time when we are trying to get to zero traffic fatalities, the
FCC should stay the course and not give up the spectrum that the
transportation community has been counting on, and has already
made considerable investments in, to help save lives."14
In addition, leaders of all 50 state DOTs, the District of
Columbia, and Puerto Rico signed a letter sent to the Federal
Communications Commission on August 20, 2019 in favor of
preserving the 5.9 GHz safety band.15
After FCC Chairman Pai's announcement of the draft proposal
at a speech in November 2019, ITE joined organizations including
AASHTO, the Insurance Institute for Highway Safety, International Association of Fire Chiefs, and others calling on the FCC to
reconsider giving up a large portion of the spectrum.6
"Connected vehicle technologies have been identified by the
National Highway Traffic Safety Administration as having the
potential to save tens of thousands of lives each year-but only if
these technologies are given the certainty of a safety spectrum that
is free from signal interference," ITE stated in a press release dated
November 21, 2019.16 "States and cities across the country have


https://www.transportation.gov/content/safety-band

ITE Journal - April 2020

Table of Contents for the Digital Edition of ITE Journal - April 2020

ITE Journal - April 2020 - Cover1
ITE Journal - April 2020 - Cover2
ITE Journal - April 2020 - 3
ITE Journal - April 2020 - 4
ITE Journal - April 2020 - 5
ITE Journal - April 2020 - 6
ITE Journal - April 2020 - 7
ITE Journal - April 2020 - 8
ITE Journal - April 2020 - 9
ITE Journal - April 2020 - 10
ITE Journal - April 2020 - 11
ITE Journal - April 2020 - 12
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ITE Journal - April 2020 - 14
ITE Journal - April 2020 - 15
ITE Journal - April 2020 - 16
ITE Journal - April 2020 - 17
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ITE Journal - April 2020 - 19
ITE Journal - April 2020 - 20
ITE Journal - April 2020 - 21
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ITE Journal - April 2020 - 23
ITE Journal - April 2020 - 24
ITE Journal - April 2020 - 25
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ITE Journal - April 2020 - 28
ITE Journal - April 2020 - 29
ITE Journal - April 2020 - 30
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ITE Journal - April 2020 - 50
ITE Journal - April 2020 - Cover3
ITE Journal - April 2020 - Cover4
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https://www.nxtbook.com/ygsreprints/ITE/ITE_June2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_May2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_April2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_March2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_February2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_January2020
https://www.nxtbook.com/ygsreprints/ITE/ITE_December2019
https://www.nxtbook.com/ygsreprints/ITE/G110939_ITE_November2019
https://www.nxtbook.com/ygsreprints/ITE/G110110_ITE_October2019
https://www.nxtbook.com/ygsreprints/ITE/G110109_ITE_September2019
https://www.nxtbook.com/ygsreprints/ITE/G108559_ITE_August2019
https://www.nxtbook.com/ygsreprints/ITE/G108250_ITE_July2019
https://www.nxtbook.com/ygsreprints/ITE/G107225_ITE_June2019
https://www.nxtbook.com/ygsreprints/ITE/G104039_ITE_May2019
https://www.nxtbook.com/ygsreprints/ITE/G104038_ITE_April2019
https://www.nxtbook.com/ygsreprints/ITE/G104036_ITE_March2019
https://www.nxtbook.com/ygsreprints/ITE/G103582_ITE_February2019
https://www.nxtbook.com/ygsreprints/ITE/G102868_ITE_January2019
https://www.nxtbook.com/ygsreprints/ITE/G100155_ITE_December2018
https://www.nxtbook.com/ygsreprints/ITE/G100154_ITE_November2018
https://www.nxtbook.com/ygsreprints/ITE/G99495_ITE_October2018
https://www.nxtbook.com/ygsreprints/ITE/G98028_ITE_September2018
https://www.nxtbook.com/ygsreprints/ITE/G97366_ITE_August2018
https://www.nxtbook.com/ygsreprints/ITE/G96287_ITE_July2018
https://www.nxtbook.com/ygsreprints/ITE/G94315_ITE_June2018
https://www.nxtbook.com/ygsreprints/ITE/G93877_ITE_May2018
https://www.nxtbook.com/ygsreprints/ITE/G93065_ITE_Apr2018
https://www.nxtbook.com/ygsreprints/ITE/G91484_ITE_Mar2018
https://www.nxtbook.com/ygsreprints/ITE/G89434_ITE_Feb2018
https://www.nxtbook.com/ygsreprints/ITE/G86608_ITE_Jan2018
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