AUTOCITS Pilot in Lisbon
Perspectives, Challenges and Approaches
Cristiano Premebida
1
, Pedro Serra
2
, Alireza Asvadi
1
, Alberto Valejo
2
, Ricardo Fonseca
3
, Rui Costa
4
,
Lara Moura
4
and Conceic¸
˜
ao Magalh
˜
aes
5
1
University of Coimbra, Coimbra, Portugal
2
Instituto Pedro Nunes (IPN), Coimbra, Portugal
3
National Authority for Road Safety (ANSR), Lisbon, Portugal
4
A-to-Be, Portugal
5
Brisa – Auto-estradas de Portugal, Lisbon, Portugal
{rui.silva.costa, lara.moura}@a-to-be.com, conceicao.magalhaes@brisa.pt
Keywords:
Autonomous Vehicles, Automated Driving, Cooperative Intelligent Transport System (C-ITS), Connected
Vehicles, Case-studies.
Abstract:
In this paper we describe the Cooperative Intelligent Transport System (C-ITS) framework, the case-studies
and the connected autonomous vehicles to be deployed in the AUTOCITS pilot in Portugal. AUTOCITS
project - which stands for Regulation Study for Interoperability in the Adoption of Autonomous Driving in
European Urban Nodes, has the main goal of contributing to the deployment of C-ITS in Europe, namely in
Spain, France and Portugal, by carrying out pilots using connected and autonomous vehicles and by contri-
buting to the regulations/legal framework on autonomous driving. The Lisbon Pilot will be conducted in a
motorway (A-9) and in an urban node (in Lisbon city), where autonomous vehicles (AVs) and instrumented
vehicles, all equipped with C-ITS instruments, will be evaluated according to three scenarios: dedicated lanes,
shared lane and road without restrictions. In the first scenario, traffic control vehicles will also be present
during the tests. In this paper we focus on the Lisbon Pilot: the main technical challenges for infrastructure,
test cases and scenarios, and the perspectives on the Portuguese legislation.
1 INTRODUCTION
Transportation is one of the essential factors of a
country’s progress, and the era of connected, coope-
rative and autonomous vehicles is bringing new ele-
ments to the transportation arena (Litman, 2018). In-
telligent Transportation Systems (ITS) make use of
information and communication technologies to im-
prove the performance of a transportation system to
obtain economic, social and energy benefits. Coope-
rative Intelligent Transport System (C-ITS) (a.k.a.
connected vehicle technology in the United States)
is the term used to describe technology which allows
vehicles to communicate with other vehicles and with
the infrastructure (Lu, 2016), and vice-versa.
The potential and emerging possibilities, challen-
ges, issues and trends of connected car technology are
discussed by (Coppola and Morisio, 2016), (Jimenez,
2017), (Sjoberg et al., 2017), among other studies.
Therefore, it is a consensus that C-ITS and Autono-
mous Vehicles (AVs) will be major components for
increasing traffic safety and efficiency of the future
ITS. In this regards, one of the key strategies of Eu-
rope is to use C-ITS as a catalyst for the implementa-
tion of autonomous driving (Parliament and UNION,
2010), (Festag, 2014), (Sjoberg et al., 2017), (Jime-
nez, 2017).
The AUTOCITS (Casti
˜
neira et al., 2018) project
will carry out a comprehensive assessment of coope-
rative systems and autonomous driving by deploying
real-world Pilots, and will study and review regula-
tions related to automated and autonomous driving.
AUTOCITS
1
, co-financed by the European Union
through the Connecting Europe Facility (CEF) Pro-
gram, aims to facilitate the deployment of autono-
mous vehicles in European roads, and to use C-ITS
services to share information between vehicles and
infrastructures to ensure safe coexistence of AVs with
1
http://www.autocits.eu/
488
Premebida, C., Serra, P., Asvadi, A., Valejo, A., Fonseca, R., Costa, R., Moura, L. and Magalhães, C.
AUTOCITS Pilot in Lisbon.
DOI: 10.5220/0006782904880494
In Proceedings of the 4th International Conference on Vehicle Technology and Intelligent Transport Systems (VEHITS 2018), pages 488-494
ISBN: 978-989-758-293-6
Copyright
c
2019 by SCITEPRESS Science and Technology Publications, Lda. All rights reserved
other (conventional) traffic vehicles.
The AUTOCITS Pilots will be deployed in three
major European cities in ‘the Atlantic Corridor of
the European Network’
2
: Lisbon (Portugal), Madrid
(Spain) and Paris (France). This paper, however, aims
to describe the deployment of C-ITS services, the test
case scenarios, and the technology of the automated
cars to be used in the Lisbon pilot. Moreover, an
overview of the Portuguese legal framework related
to self-driving cars is also presented.
The paper is organized as follows. Related work is
presented in Section 2. The AUTOCITS project and
the Lisbon pilot are described in Section 3 and Section
4, respectively. Test case scenarios are explained in
Section 5. The legal framework and C-ITS infrastruc-
ture are described in Section 6 and Section 7. Section
8 brings discussions and concluding remarks.
2 RELATED WORK
Despite the remarkable progress that has been achie-
ved in recent years to develop AVs capability, ma-
king autonomous vehicles a day-to-day reality is still
a demanding challenge (Broggi et al., 2008) (Jimenez,
2017). According to ‘Connected Automated Driving
Europe’
3
, in recent years more than 60 research pro-
jects have been actively addressed autonomous dri-
ving in Europe to overcome hurdles of all sorts and
push forward boundaries. Some of the related pro-
jects on connected automated driving are summarized
below.
The first European C-ITS project, the Eu-
reka PROMETHEUS, was initiated in the 1980s
using inter-vehicle communication. Thereafter, va-
rious projects and prototype implementations (e.g.,
CAR2CAR, DRIVE C2X, SeVeCom, SAFESPOT,
COMeSafety, etc) were developed that demonstra-
ted the technical and commercial feasibility of vehi-
cles and infrastructure communication for further de-
velopment of C-ITS technology. Recently, several
major projects (e.g., SCOOP@F, C-Roads, AUTOPI-
LOT, MAVEN, AutoMate, DigiTrans, etc) have been
initiated for large-scale field-operational C-ITS de-
ployments across Europe.
In this framework, AUTOCITS aims to contribute
to the deployment of C-ITS and autonomous vehicles
in urban nodes by developing intelligent transport ser-
vices based on cooperative systems (C-ITS) that will
enable vehicles, users and infrastructures to commu-
nicate, exchange, and share information.
2
http://www.corridor4.eu/
3
https://connectedautomateddriving.eu/
3 THE AUTOCITS PROJECT
AUTOCITS involves partners and stakeholders from
Spain, France, and Portugal. The Pilots to be de-
ployed in Madrid, Paris and Lisbon, will include
the following main characteristics (Casti
˜
neira et al.,
2018):
Include different types of roads in urban envi-
ronments (such as urban-nodes roads, motorways,
connections and interfaces with motorways);
Provide an open and connected urban environ-
ment, where C-ITS services can be tested with au-
tomated, autonomous and connected vehicles;
Involve complementary parties and stakeholders
in Spain, France and Portugal, including but not
limited to: transport operators, traffic authorities,
industry, academia;
Demonstrate the maturity of C-ITS services in the
urban environments based on state-of-the-art C-
ITS deployments happening on European motor-
way networks;
Evaluate the potential of C-ITS services in urban
environments to increase road safety and enhance
traffic information and traffic management.
The following general objectives are expected to
be achieved by AUTOCITS for the enhancement of
regulatory frameworks and also for interoperability
among the deployment of connected (CVs) and au-
tonomous vehicles (AVs):
Demonstrate the potential of C-ITS services pro-
vided by Traffic Management Centers that can im-
prove the reliability of AVs in terms of safety and
sustainability of transport, as well as to improve
the traffic management;
Develop large-scale implementation of C-ITS at
European level as a catalyst for a higher level of
automation of road transport, giving recommen-
dations for its deployment and analyzing the diffe-
rent regulations towards its circulation, including
the role of C-ITS, and addressing technical and
economic issues to demonstrate long term viabi-
lity and scalability;
Deploy pilot activities within the TEN-T Atlan-
tic Corridor and evaluate the results in order to
validate the studies, draw recommendations and
practices, and analyze how legal regulations can
be improved at this particular scenario and at si-
milar urban/inter-urban nodes at European level.
AUTOCITS Pilot in Lisbon
489
4 THE LISBON PILOT
The Lisbon pilot will have a direct involvement of
all the Portuguese partners: Institute Pedro Nunes
(IPN)
4
, National Authority for Road Safety (ANSR)
5
and the University of Coimbra (UC)
6
. The other pro-
ject partners (Indra, INRIA, UPM) and stakeholders
(University of Aveiro, A-to-Be, BRISA) will collabo-
rate and participate in this Pilot as well. More spe-
cifically, and considering the scope of the Portuguese
Pilot, the activities to be carried out will be divided
into three main components:
Technical and engineering aspects related to the
deployment of autonomous and connected cars,
and C-ITS services;
Assessment and evaluation of the Pilot;
Legal/regulatory framework and safety conditions
during the Pilot.
Finally, the company BRISA
7
(a motorway con-
cessionary) will join the pilot as the provider of C-ITS
infrastructure, and its related technology and services.
4.1 Pilot Location
The Lisbon pilot will take place on two environments,
a motorway and an urban-node. Depending on the lo-
cation and scenario, the vehicles’ technology differs:
autonomous and instrumented vehicles running at a
motorway; and autonomous shuttle running on a de-
dicated road at an urban node.
In the first environment, the Lisbon pilot will be
deployed on the motorway called A9 - CREL mo-
torway” (Circular Regional Exterior de Lisboa) and
will use two segments in both headings (see Fig. 1).
The first segment will be located between the service
area, near A16 junction, and until Queluz toll plaza;
while the second segment will be located between this
toll plaza and the beginning of A9, near of National
Stadium. Along this pathway, autonomous and con-
nected vehicles will perform several tests in one loop
through the test site.
On the other hand, the autonomous Shuttles will
circulate on a dedicated road on an urban node in Lis-
bon, transporting people between parking and main
buildings. No other kind of vehicles will have access
to the dedicated road of the shuttles.
4
https://www.ipn.pt/
5
http://www.ansr.pt/
6
http://www.uc.pt/
7
http://www.brisa.pt/
Figure 1: Lisbon pilot location on the A9 motorway. The
blue line indicates the motorway scenario for AVs.
4.2 Autonomous and Instrumented
Vehicles & Shuttles Specifications
The Lisbon pilot will include vehicles with different
types of technology: autonomous, instrumented and
autonomous shuttles. All these vehicles should be
VEHITS 2018 - 4th International Conference on Vehicle Technology and Intelligent Transport Systems
490
equipped with OBU units (i.e., onboard communica-
tion units). The vehicles to be used on the A9 motor-
way comprise three technology types: AVs connected
to the C-ITS infrastructure; CVs equipped with OBUs
compatible with C-ITS infrastructure; traffic control
vehicles equipped with OBUs; and some conventio-
nal vehicles which will be admitted under specific ci-
rcumstances. Fig. 2 shows some of the AVs and CVs
planned to participate in the Lisbon Pilot.
Figure 2: Autonomous (top) and Connected (bottom) Vehi-
cles.
In the urban-node scenario, two autonomous
shuttles developed by IPN, based on ITS technology
called MOVE, will be used. The MOVE, shown in
Fig. 3, is a driverless electric vehicle, designed for
small trips at low speeds, with the aim to be a ‘ho-
rizontal lift’ able to connect buildings of private or
semi-private spaces.
Figure 3: Autonomous shuttle MOVE.
4.3 The ‘Day 1’ C-ITS Services
The C-ITS provides ways to collaboratively share in-
formation about potentially dangerous situations on
the road. This information comes from road users
and traffic managers. Thus, the connected-vehicle
(autonomous or not) has the opportunity to take the
best actions and adapt to traffic conditions, towards
an overall positive impact on road safety, traffic effi-
ciency and comfort of driving.
Under the European strategy on C-ITS, and after
a study from the C-ITS platform, a set of priority
services (‘Day 1’ C-ITS services) was defined that
must be deployed across the EU for end-users (EU-
Commission et al., 2016). The ‘Day 1’ C-ITS services
to be considered in the Lisbon pilot are the following:
slow or stationary vehicle(s);
traffic ahead warning;
weather conditions;
other hazardous notifications.
4.4 Data Collection
For analysis and efficiency evaluation of the proposed
C-ITS for autonomous driving in the Lisbon Pilot, the
following data is expected to be recorded during the
Pilot: The GNSS path that autonomous and automa-
ted cars take from the beginning to the end of each
test; the speeds and accelerations that the vehicles un-
dergo; the chronological data for every action of the
vehicle or any changes in the present conditions; the
detected time and position of obstacles, or possible
obstacles, during each test; the distances from other
vehicles on the road, and every sent and received ITS
message.
5 TEST CASE SCENARIOS
This section describes the test case scenarios for the
Lisbon pilot with a focus on autonomous and con-
nected vehicles, followed by scenarios for the auto-
nomous Shuttle site.
5.1 Motorway Test Cases
A series of simulated and realistic tests will be per-
formed. In Simulated case, event messages are ge-
nerated virtually at the Traffic Management Centre
(TMC), according to the event triggered, and broad-
casted by Road Side Units (RSU); while in Realis-
tic case on-site vehicles, positioned at the roadside,
AUTOCITS Pilot in Lisbon
491
will be used to generate event messages accordingly.
The experiments will be tested under three conditi-
ons (test-cases), where the target autonomous vehicle
is expected to be able to reduce its speed and change
lane according to the following cases:
1. dedicated lane;
2. shared lane;
3. road without restrictions.
Some common predefined attributes are determi-
ned for test case scenarios. The target vehicle recei-
ves notification in so called ‘Destination area’ for ta-
king the appropriate action. The ‘Destination area’
includes ‘Pre-event’, ‘Event’, and ‘Post-event’ zones
which are responsible for slowing down and/or chan-
ging lane, maintaining safe conditions, and returning
to the normal condition, respectively.
Depending on the type of test conditions on the
motorway, it will be used the right-most lane of each
carriageway, that is, in both directions. At some pre-
defined road sections, there will be two lanes allowing
vehicles to change lane. These lanes will either be ex-
cluded from the normal traffic or shared with conven-
tional vehicles.
Regardless of the type of the test, the road will be
signalized so that other road users are aware of what
is happening. For the real-world events, the vehicles
causing the event i.e., a traffic control vehicle (TCV),
will stand on the roadside to ensure safe circulation.
5.1.1 Dedicated Lane
In this scenario, a dedicated lane (the right-most one)
will be segregated from normal traffic by means of
vertical signs, Variable-Message Signs (VMSs) and
TCVs, as well as law enforcement agents from local
authority. Before each test, the AV will be driven to
the beginning of the dedicated lane manually and then
switched to automatic.
Three simulated events (‘Low road adhesion due
to ice on the road’, ‘Rock falls detected on the road
surface’ and ‘Big objects detected on the road’) will
be generated virtually and will be send to the target
AV. Also, a realistic event ‘Stationary vehicle due to
break down’ will be tested using a connected vehicle
stopped as an obstacle on the roadside (see Fig. 4).
5.1.2 Shared Lane
In this case the AV is not isolated from traffic. The
current traffic can use the shared lane but the AV must
only use the shared lane. This shared lane will be
sufficient for reducing speed actions required for the
events chosen.
Ice on road
!
!
! ! !
!
!
!
(a)
(b)
(c)
Figure 4: Illustration of the test scenarios for the ‘Dedica-
ted Lane’ case: (a) ‘Low road adhesion due to ice on the
road’; (b) ‘Rock falls detected on the road surface’ and ‘Big
objects detected on the road’; and (c) ‘Stationary vehicle
due to break down’ scenario. The orange color-coded zone
indicates the ‘Destination area’.
Three simulated events (‘Low visibility due to He-
avy Rain’, ‘Awareness about Strong Winds’ and ‘Soft
Hail’) will be generated by TMC and will be send to
the target AV. The AV will reduce its speed and af-
ter passing the ‘Event’ zone accelerates again to the
normal speed.
5.1.3 No Restrictions
The road without restrictions (no restrictions) scena-
rio means that no physical barriers or other means of
constraints exist and therefore AVs are “mixed” with
current traffic, changing lane or reducing speed whe-
never it’s necessary (see Fig. 5).
Figure 5: Illustration of the test scenario for the ‘No Re-
strictions’ case.
For the ‘No Restrictions’ scenario one simulated
and one realistic tests are proposed, as follows: Traffic
jam volume increasing, and slow driving maintenance
vehicle.
5.2 Urban-node Test Cases
The following C-ITS services (one realistic and two
simulated) will be employed in the autonomous
shuttle tests: ‘Low road adhesion due to ice on the
road’; ‘Low visibility due to Heavy Rain’.
The first test case (stationary vehicle due to a stop-
ped public transport) will be a real-world scenario.
The autonomous shuttle (as public transport) stops
VEHITS 2018 - 4th International Conference on Vehicle Technology and Intelligent Transport Systems
492
in a bus stop, broadcasts the cause code to alert ot-
her approaching shuttles with the same heading for
the risk associated to the potential dangerous situation
(vehicle as an obstacle on the road). The autonomous
shuttle with the same heading of the public transport
(the stopped shuttle) must reduce speed and change
lane according to its proximity to the place.
The services ‘Low road adhesion due to ice on the
road’, ‘Low visibility due to Heavy Rain’, simulated
by the TMC, are equal in terms of actions proceeded
by the autonomous shuttles.
6 REGULATION FRAMEWORK
Governance of Highly Automated Vehicles (HAVs) -
being it fully or partially autonomous - has been one
of the most problematic and studied legal issues in
the last years, whether you approach it from a na-
tional point of view, or when looking at it from an
international law perspective. Considering the level
of regulatory evolution for automated and/or autono-
mous driving, at this point and disregarding the re-
cent 2014 amendment to 1968s Vienna Convention
on Road Traffic article 8th - which can influence the
interpretation of national legislation -, there is much
to be done in the Portuguese regulatory framework in
order to better accommodate this new reality.
Portuguese road legislation closely follows the
provisions of the international legal instruments that
bind the Portuguese Republic. In fact, like the provi-
sions of Article 8 of the Vienna Convention on Road
Traffic of 1968 (“Every moving vehicle or combina-
tion of vehicles shall have a driver.”), the Portuguese
Road Code states:
Article 11
Driving vehicles and animals
1 - Any vehicle or animal that circulates on the public road
must have a driver, except for the exceptions provided in
this Code.
2 - During driving, drivers shall refrain from performing
any acts that are likely to jeopardize the safety of driving.
On the other hand, the driver of a motor vehicle
may only do so on the public road if he is legally li-
censed to do it:
Article 121
Driver’s license
1 - A motor vehicle may only be driven on the public road,
if its driver is legally licensed for it.
To this is added the liability of the driver concer-
ning all the infringements in which he/se incurs when
driving.
Article 135
Liability for misconduct
3 - The liability for the transgressions foreseen in the Road
Code and complementary regulations rests on:
a) driver of the vehicle with respect to infringements
relating to the driving of the vehicle;
Portugal has been following the different efforts
on several international forums where the debate has
been taking place, and there has been a recent deve-
lopment in this matter: a work group has been re-
cently created (October of 2017) and mandated with
the objective of evaluating, technically, legally and
operationally the introduction of autonomous vehicles
in Portuguese road traffic as well as to prepare the
AUTOCITS test pilot to be conducted in the Lisbon
region, where autonomous vehicles will be deployed
in a real road environment in order to study its traffic
impact and communications with the infrastructure.
The legal modifications necessary for allowing le-
vel 4 and 5 autonomous vehicles circulation, where
the person behind the wheel, or where the wheel used
to be, is no longer the driver, require the previous
modification in the international legal instruments to
which Portugal is binded. After that modification or
if a different interpretation of the terms “driver” and
“person” is achieved, then Portugal will be able to
make the necessary legal modifications in order to ac-
commodate the circulation of level 4 and 5 automa-
ted/autonomous vehicles.
7 C-ITS INFRASTRUCTURE
The capability to exchange information between vehi-
cles and between vehicles and roadside infrastructure
in cooperative vehicle systems creates many oppor-
tunities for innovation in the way in which the road
network is used and managed. This will not only in-
volve the introduction of new technologies, but also
changes in the way in which road operators, vehicle
manufacturers, service suppliers and other stakehol-
ders work together to provide services for travellers
using the road network.
The communication between vehicles and bet-
ween them and the road infrastructure is crucial to im-
prove road safety, traffic efficiency and comfort to the
driver, helping autonomous vehicles (AVs), as well
as connected vehicles (CVs), to take the right deci-
sions at the right time. The real-time messages over
802.11p (ITS-G5) will be crucial to provide real time
decision making, as well as information to the vehicle
at the correct time.
For the deployment of Lisbon Pilot several scena-
rios will be carried out, as mentioned before. It is ex-
pected to test communications between vehicles and
AUTOCITS Pilot in Lisbon
493
the road infrastructure (V2I/ I2V). Two types of com-
ponents will be used for the Lisbon Pilot C-ITS de-
ployment. The first one is a vehicle based hardware
while the second one is a non-vehicle based hardware,
that is an equipment located along roadside, on board
units (OBUs) and roadside units (RSUs), respectively.
Infrastructure to vehicle (I2V) and vehicle to in-
frastructure (V2I) communication will be evaluated
through wireless communication over IEEE 802.11p
(ITS-G5). Those communication systems require
components located in vehicles (OBUs) and along ro-
adways (RSUs) to enable complete system operation.
Thus, two OBUs equipped with 2 radios, one GPS
receiver and a processor unit will be installed on con-
ventional vehicles, as well as on AVs, and connected
with an Human Machine Interface (App for tablet).
As non-vehicle based hardwares, six georeferen-
cing RSUs, making use of ITS-G5 communications
technology, will be embedded on several roadside
cabinets, namely at 7+530, 6+300, 4+410, 3+700,
2+400, 1+600 kilometers. Those RSUs will broad-
cast messages, needed to support V2I/I2V applicati-
ons, through the ITS central platform, specified and
develop by A-to-Be (a technology company, part of
BRISAs Group), making use of hybrid communicati-
ons, such as ITS-G5 (5.9 GHz) plus 3G cellular net-
works, either to the vehicles or to traffic management
center (TMC).
8 REMARKS
This paper presents the expected scenarios, test-cases
and technology involved in one of the pilots to be de-
ployed in the AUTOCITS project: the Lisbon Pilot.
Some general and key technical aspects of the Lisbon
Pilot have been covered in this paper, with a parti-
cular focus on the expected scenarios (motorway and
urban-node), vehicles’ technology, C-ITS infrastruc-
ture, the test-cases that will be carried out, and also
the current regulation for the adoption of automated
and/or driverless vehicles in Portugal.
The AUTOCITS project is currently under way
and its technical and technological aspects are at a
very advanced stage. More details and up-to-date in-
formation is available at www.autocits.eu.
ACKNOWLEDGEMENTS
This work has been supported by AUTOCITS - Re-
gulation Study for Interoperability in the Adoption
of Autonomous Driving in European Urban Nodes” -
Action number 2015-EU-TM-0243-S, co-financed by
the European Union Innovation and Networks Exe-
cutive Agency - Connecting Europe Facility (INEA-
CEF). We also thank Prof. Vitor Santos (Univ. of
Aveiro) and the Institute of Systems and Robotics
(ISR-UC) Team for their collaboration in the project.
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