Connected vehicle becomes a new form of safe driving

Cooperative driving systems and probe data are keys to this technology

2013/11/28

Summary

 The 20th Information Transport Systems (ITS) World Congress Tokyo 2013 was held at the Tokyo International Exhibition Center. This report introduces the special features of this year, "Cooperative Driving Safety Support Systems" and "Information Services Utilizing Probe Data and Center-processed Infrastructure Sensor Information." This report particularly focuses on the "Cooperative Driving Safety Support Systems." The effects of the system were played up by five on-road demonstrations and the exhibitions in the venue.

Related Reports:
ITS World Congress 2013: (Nov. 2013):
  * Toyota & Honda demonstrate autonomous driving (video included)
  * Autonomous driving technology beyond reality?



What is the connected ITS?

 The functions using vehicle-to-infrastructure communication have been conventionally called the "infrastructure-cooperative ITS." In recent years functions using vehicle-to-vehicle communication and probe data are actively being developed. Vehicles mounted with those functions are called "connected vehicles" in contrast to vehicles mounted with "autonomous ITS." This report classifies ITS functions as shown in the following table: "cooperative autonomous driving" (Field 1), the "cooperative driving support" (Field 2), and the "center information services" (Field 3). These fields are collectively regarded as the "connected ITS."

 

Cooperative-type (connected) Autonomous-type
Infrastructure sensor
(Vehicle detection
sensor,
traffic camera etc.)
probe data Utilization of data
from other vehicles
(vehicle-to-vehicle
communication)
Onboard sensor
(Onboard camera,
radar etc.)
Driver
assistance
Autonomous driving (Field 1) Cooperative autonomous driving (Field 4)
Autonomous driving
Driving safety assistance (Field 2) Cooperative driving support (Field 5)
Autonomous
driving support
Other driver assistance systems
(related to green technology, driving comfort, etc.)
Other
information
services
Navigation information (Field 3)
Center information services
(Field 6)
Autonomous navigation
Disaster information
Traffic control
Vehicle monitoring

 

Field name Description Example
1 Cooperative Autonomous Driving This function controls a vehicle's actions by combining information obtained from outside the vehicle with that from the onboard sensors. Autonomous driving cars announced by Toyota and Honda
2 Cooperative driving support This function provides driver assistance by combining information obtained from outside the vehicle with that from the onboard sensors. (by alerts and control) Alarm systems provided by DSSS/ITS Spot Services
3 Center information services Provision of probe data and infrastructure sensor information processed by the center Traffic information including VICS, road closed signs, traffic light information including PTPS, and commercial driving operations control
4 Autonomous driving This function controls vehicle behaviors by using only information from the onboard sensors such as camera and radar without using information obtained from outside the vehicle. Google Car Nissan's autonomous driving car
5 Autonomous driving support This function provides driver assistance by using only information from the onboard sensors such as camera and radar. (Alerts and control) EyeSight Ver.2
(Fuji Heavy Industries: Subaru)
6 Autonomous navigation Navigation system using GPS-based positioning and onboard map Navigation system without a means of communication
DSSS: Driving Safety Support System
VICS: Vehicle Information and Communication System
PTPS: Public Transportation Priority System


 The topics related to the "connected ITS" were largely covered at the ITS World Congress of this year, and the "connected" functions are likely to become one of the priorities of future development in the ITS field.

 

Summary of connected ITS exhibition at the ITS World Conference

ITS type Description
Cooperative autonomous driving
(Field 1)
* This function obtains information from outside the vehicle using vehicle-to-vehicle communication (V2V) and vehicle-to-infrastructure communication (I2V) as well as onboard camera and radar to project it onto driver controls.
*The speech and the exhibitions at the ITS conference suggested that the industry is on the verge of forming the common view that the information obtainable from onboard sensors alone is insufficient for autonomous driving.  The "Cooperative" system which also uses information from outside the vehicle may work better.
  (The topic about autonomous driving has been already covered in"Toyota & Honda demonstrate autonomous driving" and "Autonomous driving technology beyond reality?")
Cooperative driving support system
(Field 2)
* The development of cooperative driving safety assistance systems using V2V/I2V and vehicle-to-pedestrian communication (V2P) is in progress by teams comprising personnel from the government and private companies. (ITS Spot, ASV, DSSS etc.)
* In this conference, an on-road demonstration was conducted for this system under the name of "ITS Green Safety" collectively by the ITS Spot, ASV, and DSSS projects. A large number of participants experienced the trial run.
* The "communication system" was exhibited by many exhibitors as a basic technology for commercialization. Some auto makers exhibited a prototype car-mounted system under review for commercialization.
* The SHOWCASES and exhibition contents of this conference indicated a clear movement for the "Cooperative Safe Driving System" as the future mainstream.
Center information services
(Field 3)
* The "function of visualizing passable roads" produced based on the probe information had drawn much attention since the Great East Japan Earthquake. In this conference again, a traffic information service based on processed probe data was exhibited.
* Services for vehicle monitoring and driver assistance provided by combining several types of information and processing mass probe data ("big data processing") were also exhibited. (See below for details)
* Information services using cloud-based big data processing are expected to be continually expanded.
V2V: Vehicle to Vehicle communication
I2V: Infrastructure to Vehicle communication
V2P: Vehicle to Pedestrian communication
ASV: Advanced Safety Vehicle

 

 



"ITS GREEN SAFETY" Demonstration Driving

 

Demonstration driving explanation panel
Demonstration driving explanation panel
(Source: ITS Japan Webpage)
Scene of demonstration vehicle
(Scene of demonstration vehicle in
"S03 Smartway with ACC/CACC")

 

Showcase Summary
S01 Next Generation DSSS
(I2V)
Participants will experience:
  * Driving Safety Support Systems (DSSS) based on V2I communication using infrared beacons and radio waves that prevent traffic accidents at intersections due to the driver's carelessness; and,
  * Smooth Intersection Passing Assistance Systems using signal information.
S02 Cooperative Advanced Safety Vehicles
(V2V, V2P)
Participants will experience DSSS based on V2V and V2P communications with the following functions:
  * To detect and alert a driver for approaching vehicles that are difficult to recognize or are likely to be overlooked
  * To detect and alert a driver for approaching pedestrians (see below for details)
S03 Smartway with ACC/CACC
(I2V, V2V)-Sag congestion mitigation service on expressways
Participants will experience smooth traffic flow enabled by providing information for smoother transportation via ITS Spot and by controlling the vehicle-to-vehicle distance by using the ACC/CACC functions mounted on the vehicle. (See below for details)
(Note) Sag section: A section where the road gradient gradually begins to rise.
    Approximately 60% of traffic congestion on intercity expressways in Japan occurs at sag sections.
S04 ITS Spot Services
(I2V)
Participants will experience a part of the "ITS Spot Services" which has been used since 2011 and new services under development.
  * Existing services: Dynamic Route Guidance, Alerts for Safe Driving Support
  * New service: Cashless payment service at parking-lot
S05 Mobile and ITS Spot cooperative services  (I2V) Participants will experience the following ITS services offered by linking ITS Spot and a cellular network:
  * ITS Spot information displayed on participants' smartphones;
  * Emergency evacuation information conveyed through a cellular network.
ACC: Adaptive Cruise Control: Constant-speed driving with inter-vehicle distance control
CACC: Cooperative-ACC: ACC to receive the information of the vehicle in front via vehicle-to-vehicle communication


 The reporter experienced the test rides for the above-mentioned S02 and S03 and would like to report the condition.

 

<S02>Cooperative Advanced Safety Vehicles

Summary  The reporter experienced six cases of the "Cooperative Advanced Safety Vehicles: ASV-5" demonstrated on ordinary roads around the venue as a part of the fifth stage of the Advanced Safety Vehicles promotion project. The project is promoted under the leadership of the Ministry of Land, Infrastructure, Transport and Tourism.
Experience case (1) Right Turn Collision Prevention System: V2V
    This system alerts a driver to oncoming vehicles on the opposite lane, when the vehicle turns right.
(2) Pedestrian Information and Communication System: V2P
    This system alerts a driver to approaching pedestrians via smartphone.
(3) Intersection Collision Prevention Support System: V2V
    This system alerts a driver to approaching vehicles from the right direction when a vehicle turns left at intersections without traffic lights.
(4) Construction Vehicle Information Service System: V2V
    This system alerts a driver to construction vehicles in front.
(5)Collision Prevention System with Motorcycles at left turns: V2V
    This system alerts a driver to approaching motorcycles from behind when a vehicle turns left.
(6) Emergency Vehicle Information Service System: V2V
    This system alerts a driver to approaching  emergency vehicles and their direction.
Experience review * The 5.8 GHz band V2V communication was likely to be interrupted when the target vehicle is behind an obstacle (building, parked vehicle etc.). This issue, however, may be resolved by using the 700 MHz band which is separately under development.
* During the demonstration, the reporter understood the intended functions very well and felt that they will become useful as safety information services if commercialized.
* In the real world, however, vehicles not equipped with the V2V communication system will be on the roads. Accordingly, the information services may remain insufficient to drivers until the time when the V2V system becomes ubiquitous.

 

<S03>Smartway with ACC/CACC-Sag congestion mitigation service on expressways

Summary  The reporter experienced the demonstration on the Metropolitan Expressway Bay Shore Route to smooth traffic flow through the combined use of the information provided via ITS Spot and the vehicle's ACC/CACC functions. The ITS Spot service project is promoted by the Japanese Ministry of Land, Infrastructure, Transport and Tourism (MLIT).
Experience case (1) Lane Utilization Optimization Service: I2V
    This service detects traffic congestion on the passing lane and encourages a driver to use a less congested cruising lane.
(2) Vehicle-to-vehicle Gap Optimization Service Using ACC: I2V
    This service detects traffic conditions and encourages a driver to turn the ACC on when the system judges that ACC-based driving will contribute to smoother transportation.
(3) Vehicle-to-vehicle gap Optimization Service using CACC: I2V
    This service detects traffic conditions and encourages a driver to turn on the ACC function when the system judges that ACC-based driving will contribute to smoother transportation. When V2V communication is possible with another car in front, the on-board equipment will notify the driver that vehicle-to-vehicle communication is available. The driver then turns on the V2Vcommunication to use the CACC function due to this notification.
Experience review * The reporter experienced the effect of CACC by participating in the Showcases (2) and (3).CACC detects acceleration and deceleration of the vehicle in front through the V2V communication. Meanwhile, ACC is an autonomous driving safety assistance system based solely on the measurement of inter-vehicle distance. The reporter experienced the advantages of CACC over ACC as CACC enables a vehicle to control the speed more quickly than ACC.
* The reporter felt the necessity of mounting vehicles with the V2V communication system as standard equipment in order to enjoy the effectiveness.
* The reporter also experienced the function of encouraging a driver to turn on the ACC. This function leaves the final decision to the driver and therefore whether this function will spread or not may depend on how much comforts drivers may feel following recommendations of ACC driving assistance.

 



Japanese ministry, MLIT's strategies for ITS Spot services

 

Basic services of ITS Spot

Slogan  Smartway for Open ITS
Dynamic route guidance * Extensive traffic congestion data will be distributed. Intelligent route selection by ITS Spot-compatible on-board equipment.
* Data on the time required to drive the entire metropolitan Tokyo area will be distributed when a vehicle enters the area from suburbs. This will enable the entire road network to be effectively used.
Driving safety assistance * Potentially dangerous minor incidents during driving will be reduced by alerting in advance.
* At accident-prone areas, alerts will notify dangerous conditions such as invisible traffic congestion after a curve.
  Alerts to fallen objects on the road.
  Images of traffic congestion at the entrance of a tunnel.
  Images of snowfall and mist.
ETC * ETC services via ITS Spot services will be achieved.

 

Expansion and development of new services

Prospects of autonomous driving * The Driver Assistance System will be upgraded into a system enabling Autopilot = autonomous driving on expressways
* Effects of Autopilot System

  Relief/mitigation of traffic congestion, reduction of traffic accidents, reduction of environmental burdens, transport support for the elderly, improvement of driving comfort, strengthening of international competitiveness
* Progress towards an Autopilot System
  Issues will be examined on the aspects of institution, technology/safety, and social acceptability.
* Autonomous driving will be achieved in three phases as shown below
    Phase 1: Development for continuous driving on the same lane
    Phase 2: Development for driving with lane changes
    Phase 3: Development for optimum driving during merging lanes and congestions.
* Roadmap toward development and goals to achieve
    Phases 1 and 2 will be achieved by the early 2020s.
Multi-purpose expansion of ETC * Economic effects of ETC
    The number of ETC-mounted vehicles has reached 43 million units. The toll collection cost was reduced by 75%.
    The interchange construction cost was reduced to approximately one-tenth by constructing ETC-exclusive interchanges.
* Social effects of ETC
    CO2 reduction effect of approximately 220,000 t/year. Promotion of efficient use of roads by diversified toll measures.
* Introduction of multi-purpose use ETC will be promoted
    Public parking-lot payment service, measures to relieve long queues of taxis waiting for passengers etc.
* Expansion of applications to private services will be promoted
    Automatic toll collection for parking-lots, sophistication of customer management, simplified ferry boat boarding etc.
Sophistication of road management by utilizing big data * Use of probe data for countermeasures against traffic congestion
    Probe data will be used as a means of locating traffic congestion points and of measuring the effects of countermeasures.
* Utilization rates of roads will be increased by using probe data
    Optimum traffic flows will be produced by monitoring mass probe data.
* Promotion of the use of probe data for traffic safety
    Identification of dangerous points and frequency, where sudden decelerations often observed, and measurement of effects of countermeasures.
* Promotion of the use of probe for the assessment of road-related projects and measures against severe winter
    Effects of signal indication optimization will be verified. Assessment of conditions under which a  vehicle decelerate in bad weather.
Internet connection * Expansion of Internet-accessible service areas and roadside stations
Types of information accessible on the Internet will be expanded such as facility information, road traffic information, sight-seeing information, airport information, parking-lot information and flight information.
Support for physical distribution * Services applicable to the operations control of freight vehicles and to the management of freight distribution.
Linkage with smartphones * The information from ITS Spot will be made receivable on smartphones
Movement support in the event of disasters * For the minimization of disaster damage
    Emergency support such as earthquake occurrence information and tsunami information will be provided to the on-board equipment.
* Information about passable and impassable road networks will be promptly provided on the web.

 

Scene of exhibition by the Ministry of Land, Infrastructure, Transport and Tourism
(Exhibition by the MLIT)

 

 



Exhibitions on suppliers' basic technologies to realize "connected" vehicle

Supplier Exhibitions
Denso On-board equipment for infrastructure cooperative system * Exhibition of the components of the "on-board equipment for infrastructure cooperative system" which was mounted on the demonstration vehicle in the ITS GREEN SAFETY SHOWCASE of this conference.
* It has theV2V and V2I communication functions.(Expected to be commercially available in Japan, US, Europe, and China in and after 2015)
DSRC on-board equipment * Exhibition of the ITS Spot-compatible DSRC on-board equipment equivalent to ETC on-board equipment in size (now on sale).
* It provides traffic information and driving safety assistance by displaying information and providing voice navigation on a compatible smartphone. DSRC-compatible navigation is not necessary.
Alpine Electronics ITS on-board equipment * Exhibition of an integrated unit (ITS on-board equipment) combining the previously separated units, "ETC on-board equipment," the "ITS Spot on-board equipment," and the "optical beacon on-board equipment" (Now on sale)
* This equipment can be combined with a V2I cooperative navigation system to realize a car-mounted navigation system which is compatible with all services (ETC, ITS Spot, optical beacon).
Car navigation system * Exhibition of the "Safe and Secure Car Navigation System" equipped with driving safety assistance systems (DSSS) services. (Now on sale)
* This system displays driving safety assistance information by combining information obtained from the DSSS and the vehicle's own conditions (braking and steering).
Panasonic Vehicle-to-pedestrian communication technology * Exhibition of vehicle-to-pedestrian communication technology (V2P communication) with 700MHz-Band.
* A driver and a pedestrian communicate with each other via their own terminals to notify the other of his presence.
* Two research papers have been published on the V2X communication technologies.
  No. 3021: An Examination of Vehicle-to-Pedestrian Communication Access Method which can co-exist with V2V and ISV
  No. 3032: Development of Pedestrian Portable Terminal for ITS (exclusive IC, antenna network, etc.)
Sumitomo Electric Industries Vehicle-to-infrastructure Cooperative Telematics Terminal * Exhibition of the Vehicle-to-infrastructure Cooperative Telematics Terminal (Drive Link: under development).
* It is an exclusive device with the function of controlling the communication between the road-side communication devices and the vehicle. It also has the function of linking the Telematics Center and the vehicle via smartphone-based navigation.
* It has the communication security function and the platform function to facilitate the addition of applications for the on-board equipment.
Oki Electric Car-mounted communication device * Exhibition of a V2X unit for driving safety assistance services linked with smartphones.
* Communication units have been developed for I2V, V2V, and V2P. (See photos below)
* The communication units for V2V and V2P were mounted on the demonstration vehicle for SHOWCASE S02 of this conference.
Vehicle-to-vehicle communication unit * The vehicle-to-vehicle communication unit for automatic platooning was developed in the NEDO's "Energy ITS Project." (See photos below)
* This unit enables highly reliable vehicle-to-vehicle communication required for platooning by achieving double system with vehicle-to-vehicle optical communication as a subsystem in addition to radio-wave based vehicle-to-vehicle communication.

 

Exhibition scene of the Oki Electric's V2X units
 Oki Electric's V2X units (from the left):
* V2V/V2P units used for SHOWCASE S02
* I2P unit    * V2P unit
* A smartphone for exhibition    * V2V unit
Exhibition scene of the Oki Electric's vehicle-to-vehicle communication unit
Oki Electric's vehicle-to-vehicle communication unit for automatic platooning (from the left):
* Radio wave based vehicle-to-vehicle communication unit
* Optical vehicle-to-vehicle communication unit
(Two pairs of the same products are exhibited.)

 

 



Automakers' exhibitions on cooperative control/connected functions

Automaker Exhibitions
Toyota * The "Cooperative ITS Future Map" was exhibited. It indicates a future vision of "Cooperative ITS," which enables expansion of safer and more eco-friendly driving through cooperation among road infrastructure, automobiles, and people. (See the photo below).
* The details of each service of cooperative systems were also exhibited.
  * Driving Safety Support System (DSSS): (Available)
      This system provides information about surroundings via optical beacons.
  * ITS Spot Services: (Available)
      Extensive traffic information which supports safe driving is provided.
  * Vehicle-to-vehicle cooperative system (V2V): (Soon to be available)
      This system permits mutual communication between vehicles to exchange information about their locations and speed to detect the presence and behaviors of surrounding vehicles.
  * Vehicle-to-infrastructure cooperative system (V2I): (Soon to be available)
      This system provides information for the presence of cars or pedestrians and traffic lights that are difficult for a driver.
  * Vehicle-to-pedestrian cooperative system (V2P): (Soon to be available)
      The vehicle communicates with terminals which are carried by pedestrians to notify the driver of the presence of pedestrians.
Honda * A concept was proposed of realizing safe and smooth traffic through cooperative communications among automobiles, motorcycles, and electric carts such as the Monpal.
* Honda also proposed the use of Wi-Fi communications as a means of communication. (See the photo below)
  A vehicle will send information about the vehicle status and a Monpal will send information about its location and the driver's operation.
Nissan * Nissan proposed the "Future Created by Intellectualization" in its exhibition relating to autonomous driving. This proposal pointed to a direction of making possible a traffic society without accidents or congestion through the "evolution of autonomous driving,"  communications between autonomous driving cars, and the use of the vehicle-infrastructure cooperation.
Fuji Heavy Industries (Subaru) * FHI exhibited the ITS functions mounted on its demonstration vehicles that participated in the SHOWCASES S02 and S03 of this conference.
  * ASV Cooperative Advanced Safety Vehicles
      This vehicle prevents accidents with vehicles or pedestrians via V2V/V2P.
  * Smartway with Cooperative Adaptive Cruise Control (CACC)-Sag congestion mitigation service on expressways
      This function enables highly-responsive smooth acceleration and deceleration viaV2V. It permits a vehicle to keep optimum inter-vehicle distance.

 

Toyota's general view showing
Toyota's future map with the notion "Cooperative ITS will expand rapidly throughout cities in the future."
* ITS Spot services are shown on the lower left and DSSS services on the upper left
* ASV-5 services are shown on the upper right and Next Generation DSSS services on the lower right.
Honda's exhibition panel
Honda's exhibition panel for cooperative communications
* Vehicle-to-vehicle wireless communication system between a vehicle and a Monpal is shown in the middle.
FHI's demonstration vehicle for SHOWCASE
FHI's demonstration vehicle for SHOWCASE

 

 



Exhibitions on processing and use of probe data

Supplier Exhibitions
NEC Presentation of safety driving services * Exhibition of the cloud-based vehicle monitoring service that supports the safe driving of the driver.
* Video images shot by onboard camera and driving operations will be recorded in the drive recorder. Then the data will be transmitted to the data center, where the video images and driving operations will be analyzed.
* Safe driving information will be presented to the driver based on the analyzed data.
Provision of information about surroundings * Exhibition of a system which promptly relays the results of an analysis of a large amount of data by optimized frequency of probe data collection.
* The new system is capable of processing data amounts three to five times larger than existing technology. Through this feature, the system allows for a predictive function regarding surrounding vehicles, warning of their future position.
Expressway traffic control * Exhibition of the traffic control system currently in operation at NEXCO-Central.
* This system collects detected vehicle data on expressways five times more frequently than the conventional system. This mass data analysis enables more elaborated traffic flow control.
NTT Vehicle driving operations control * Exhibition of the telematics service "NCS Drive Doctor" sold by NTT's affiliation company, NCS (Nippon Car Solutions Co., Ltd.).
* This service permits a user to assess a vehicle's driving status and the safety level of the driver through the web by analyzing the driving data automatically sent to NCS via on-board device equipped with communication functions of NTT DoCoMo.
Analysis and visualization technology * Exhibition of the analysis and visualization technology for big telematics data.
* This technology analyzes and visualizes telematics data by combining external conditions, including weather.
  The following applications are exhibited as examples.
    * Organizing of a hazard map based on vehicle movement patterns and information from onboard sensors.
    * Visualizing of movement patterns with different types of complex chronological data.
* NTT aims to establish a technology that enables future prediction by multifaceted analysis.
Panasonic Traffic information services * Exhibition of a seamless traffic information system using probe data.
* The use of probe data enables expansion of the existing service area of the traffic information services.
Mitsubishi Heavy Industries Electric vehicle (EV) charge management * Exhibition of an electric vehicle (EV) charge management system through probe data management.
* This system links electric vehicle (EV) owners and the managers of charging facilities. It grasps the locations and conditions of vehicles using probe data and provides charging information in consideration of the status of charging facilities.
* demonstration experiments are in progress in various parts of the world (such as Kyoto, Osaka, and Nara Prefectures, and Masdar City (UAE)).
Sumitomo Electric Industries Route information and traffic information services * Exhibition of a data analysis processing technology for the telematics presently in operation.
* This technology estimates travel time by combining the probe data and the traffic congestion/regulation information to provide drivers with route information and traffic information for eco-friendly driving.
Ordinary road traffic light control * Exhibition of a traffic control system using the driving path data in operation.
* This system enables appropriate control of traffic lights by detecting the end of traffic congestion using the running path data collected from optical beacons and sensors.
Hitachi Traffic information services * Exhibition of a probe traffic information system in operation.
* This system analyzes the probe data collected from traveling vehicles, converts the probe data into linked travel time through map matching and route search, and provides the analytical results as traffic information including traffic congestion conditions.
Honda Safe driving coaching * Exhibition of the "Safe Driving Coaching" that is in operation as one of Internavi LINC Services.
    * This service alerts a drivers to dangerous locations detected from the probe data.
    * It also teaches safe driving skills to a driver based on the probe data.
Disaster Damage Prevention and Mitigation * Exhibition of the "Disaster Damage Prevention and Mitigation" functions that is in operation as one of Internavi LINC Services.
    * This service provides tsunami information through the telematics system.
    * It also displays passable roads on the on-board equipment.

 

 



Future trends of connected ITS

ITS type Description
Cooperative driver assistance system  * The system is expected to be increasingly commercially available on the aspects of both provision of information/warning and motion control.
* The reporter, however, keenly felt that the solution of two issues, viz. the "spread of infrastructure facilities" and the "spread of compatible on-board equipment," are essential through his experience in SHOWCASES.
* Provision of proper information from the road side in a timely manner is desired. To this end, the "spread of infrastructure facilities" is required to improve the data processing functions on the infrastructure side and to increase the number of information terminals to be installed on the roads.
* Furthermore, in order to enjoy the effects of the driver assistance functions through the V2V communication, other surrounding vehicles should be capable of V2V communication.
* With the effects of the cooperative driver assistance system actively appealed in the exhibition and SHOWCASE demonstration driving, the reporter could clearly feel the intentions of the government and related industries toward the diffusion of the system.
* Thus, demonstration experiments to experience user merits from mounting this system on vehicles and development of new technologies for spreading the system (such as the application of Wi-Fi technologies to car-mounted equipment) will be continued.
Center information services * As for the use of the probe data, many examples of system applications were exhibited in this conference such as traffic information services, driver assistance information services, and traffic control.
* Fundamental technologies were also exhibited, such as a technology to efficiently process three to five times larger data than the conventional system and a technology to analyze and visualize the probe data in combination with external conditions such as weather.
* Thus, new services are expected to be expanded in such fields as driver assistance information services, operations control system, and traffic control supported by the progress in big data processing technologies.

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