Autonomous Vehicles - KPIT

FORWARD OBSTACLE DETECTION
AND AVOIDANCE
Information about accident or
traffic sent back to following
vehicles using DSRC
Figure 2: Forward Obstacle Detection and Avoidance [7]
B. Approaching Emergency Vehicle
Warning
Vehicle to vehicle communication shall
provide the information about an approaching
emergency vehicle through traffic, as shown in
Fig. 3. This would assist in clearing the street
for the emergency vehicle thereby reducing
the risk to other vehicles.
Approaching Emergency
vehicle warning
Information about approachin
emergency vehicle sent ahea
through vehicles using DSRC
Figure 3: Approaching Emergency Vehicle [7]
C. Cooperative Adaptive Cruise Control
When the car approaches a sharp curve, the
communication system fitted with line of sight
of radar warns the adaptive cruise control
system of any slow moving vehicles just
around the turn, as shown in Fig. 4.
Figure 5: Self-Driving Requirements [8]
This requires elaborate facilities within
vehicles (in-vehicle domain), neighboring
vehicles (ad-hoc domain), the roadside
equipment and other infrastructure
(infrastructure). Application unit and on-board
unit will be fitted within the cars and
neighboring cars and it constitutes the invehicle
domain. The in-vehicle domain with
the special fitted sensors, antennae and IP
based communications between vehicles
provides the ad-hoc domain. This setup
facilitates the car-to-car communication.
Similarly, smart toll stations, intelligent gas
stations, roadside antennae, internet and
corresponding servers and communication
t e c h n o l o g i e s i n c l u d i n g I P b a s e d
communication between roadside or hotspots
constitute the infrastructure domain.
DSRC
Adaptive
Cruise
Control
Cooperative Adaptive Cruise Control
Figure 4: Cooperative Adaptive Cruise Control [7]
Self-Driving vehicle systems shall monitor
adverse weather and hazardous driving
conditions. Such a car requires V2I
communication to acquire information from
weather stations and traffic agencies. It also
requires V2V communication to acquire
information about the driving experiences of
road by another vehicle such as a loss of
traction (due to water or ice).
Thus various needs and the usage of selfdriving
vehicles and few set of useful features
are depicted in Fig.5.
Figure 6: Vehicle-to-Vehicle and Vehicle to
Infrastructure Communication [4]
Thus, the intelligent transport systems boost
the tremendous research on needs of vehicleto-vehicle
(V2V) and vehicle to infrastructure
(V2I) communication.
I I I . D S R C C o m m u n i c a t i o n
Challenges
The self-driving technology will reduce
accidents through communication as well as
direct vehicle control and will open up wide
range of infotainment area by connectivity.
The most important goals of V2V and V2I
communication are the transfer of trustworthy
and correct information, extreme robust
TechTalk@KPIT, Volume 6, Issue 4, 2013 541