No.1 (March, 2008) Special Issue: ITS
Vol.3 No.1 (March, 2008)
Special Issue: ITS
Safety and Security
ITAGAKI Suguru ・NODA Yuichi ・TANAKA Toshiaki
“Vehicle-Infrastructure Cooperation Systems” are systems that aim to improve the safety and convenience of road traffic by communication and sensing between vehicles and roadside infrastructures.At the present time the vehicle-infrastructure cooperation systems are being developed around the world and in this paper we focus on one of the applications that deal with intersection safety. We also introduce three actual projects related to these systems from around the world. These are “Vehicle Infrastructure Integration (VII)” in the U.S., “PReVENT” in Europe and “Driving Safety Support Systems (DSSS)” in Japan. Finally, we describe NEC’s activity in DSSS.
IOKANISHI Shogo ・KON Mutsumi ・CHIKU Shintarou ・SUGIYAMA Masao ・SAKURAI Hitoshi
This paper discusses the characteristics and applicability of various terminals installed at the roadsides of expressways and driveways, including sensors for collecting road management information and information boards for providing road information, and the network dedicated for the communications between the terminals and central offices.
Dr. Andreas Festag ・Roberto Baldessari ・Dr. Wenhui Zhang ・Dr. Long Le ・
Amardeo Sarma ・Masatoshi Fukukawa
Vehicular communication based on short-range wireless technology opens up novel applications improving road safety and travel comfort. Ad hoc networking enables a direct communication among cars as well as between cars and road-side communication devices. Geocast is an ad hoc routing scheme which is specifically considered in Europe as a core networking concept for future CAR-2-X systems. It provides wireless multi-hop communication and allows for geographical addressing and routing. This paper describes advanced concepts and mechanisms to deploy Geocast in realistic environments and presents NEC’s CAR-2-X platform.
YAO Enjian ・SATO Akinori
PROROUTE is a dynamic route guidance system based on the probe information, currently under development by the P-DRGS Consortium. It features route searches using road link travel time information, which is predicted with real-time probe data and accumulated database that is compiled based on previously collected probe car data. This paper introduces the two element technologies incorporated in PROROUTE in order to achieve highly accurate travel time prediction and route guidance performances. These are the NEC-original travel time prediction technique and the automatic updating function of the travel time accumulated database used as the basis for prediction and route guidance. In addition, the usefulness of the travel time prediction function will be demonstrated by evaluating travel time prediction accuracy for a specific road section.
NAKAMURA Nobutatsu ・KIDA Koji ・FUJIYAMA Kenichiro ・IMAI Teruyuki
Expectations are increasing for the advanced Telematics services that collect the massive data uploaded from automobiles (mobile objects) to a center in order to utilize the results of analyses. The implementation of these services is dependent on an information communication technology capable of collecting massive data and analyzing massive data sources at high speeds. This paper is intended to introduce the data stream technology that is used in such cases for the collection and analysis of massive data. In addition, the results of the prototyping and technological evaluation of a system prototype that can process the position and velocity data from 50,000 vehicles and provide traffic jam information in real time are also discussed.
Based on the activities for the Internet ITS (Intelligent Transport Systems) that was started in FY2001, this paper is intended to introduce the Internet ITS Platform Specifications (“the PF Specifications) Ver. 2.0.0 released in 2006 and to discuss the present status of the Internet ITS Consortium. The paper will also include considerations of future development plans, including the efforts to be made by NEC Corporation.
SAKURAI Mitsunori ・MATSUHASHI Masamichi
InfoSign is a system that provides position information to pedestrians wherever they are: indoors or outdoors or even in underground shopping malls. It is based on a linkage with mobile terminals using the Bluetooth wireless communication technology. The system allows each pedestrian to obtain a route guidance service and other information that is specific to his or her position.This paper introduces InfoSign and also describes examples of pedestrian navigation services that can be expected to be supported by the system.
YOSHIMOTO Masahiro ・KONDO Toshiya ・NOGI Yoshinori ・OKANISHI Shogo ・
ISSHIKI Naoki ・SUGAWA Kunihiko
The ETC (Electronic Toll Collection) system is widely employed for collecting road tolls. The vehicle ID service of the ETC has recently been made public in order to promote the multipurpose uses of ETC on-board units in applications other than for the toll collection. This has aroused a need for low-cost DSRC (Dedicated Short Range Communication) roadside units among the service providers, who plan to develop services that utilize vehicle IDs. NEC has recently been developing the INFOBEACON in order to meet this need. This paper describes the background of development and features of the INFOBEACON together with examples of its applications, such as a vehicle management system and an actual case of a pilot program.
In the 1990’s, concerned that the survival of its domestic factories was at stake, NEC started its “Production Innovation” scheme. Subsequently, this policy has been advancing supportive improvements in its factories by the creation of a “pull” based mechanism that deals with the demands from customers. By this mechanism the logistics system is reformed by information on individual orders from customers being transmitted directly to the factory. Production innovation is now positioned as a management innovation that features “MONOZUKURI strengthening” activities that cover all of NEC’s departments. This paper is intended to introduce a summary of the “MONOZUKURI strengthening” and production innovation activities of NEC.