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U. Glaeser

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AHS means advanced cruise-assist highway system originally from automated highway system. This<br />

system supposes advanced safety vehicle to enhance traffic safety and reduce accidents. This system is a<br />

kind of driving support system with collaborating road infrastructure and vehicle.<br />

ASV is advanced safety vehicle to enhance traffic safety and reduce accidents. It has originally aimed<br />

to do so without any aid of road infrastructure. But now both ASV and AHS projects are collaborating<br />

because the collaboration is more effective from the point of view of both system performance and its cost.<br />

SSVS means super smart vehicle system. Now, its main activity is related to the development of intervehicle<br />

communication technologies.<br />

UTMS is an abbreviation of universal traffic management system. This project has an aim to develop ITS<br />

using two-way communication between road and vehicle, particularly using infrared light communication.<br />

In 1995, the Japanese government set nine development fields to promote Japanese ITS. Both Fig. 38.5<br />

and Table 38.2 show the nine development fields. In Fig. 38.5, those fields are expressed dividing the two<br />

categories of road infrastructure side and vehicle side.<br />

Vehicle side includes only two fields. One is advances in navigation system (ANS) and the other is<br />

assistance for safe driving (ASD). For example, VICS is included in the field of ANS. Five of the nine<br />

fields belong to infrastructure side. For example, road maintenance by special cars like removal of snow<br />

on roads using snow shoveling car is in these five fields.<br />

ETC and SFP, which means support for pedestrians, locate between infrastructure and vehicle because<br />

these systems are very effective only when both infrastructure and vehicle are collaborating.<br />

38.3 Status of Japanese ITS Development<br />

It is apparent that setting these developing fields shown in the above accelerates ITS development. As a<br />

result of this VICS has started its service to provide vehicles with real-time traffic information such as<br />

congestion, road construction, and accidents since 1996. Though this system assumes that in-vehicle<br />

navigation systems are loaded in a vehicle, VICS is the first system to be put into practical use all over<br />

the world. In 2001 ETC is also to be started at the several tollgates of highways in Tokyo and Osaka area.<br />

© 2002 by CRC Press LLC<br />

TABLE 38.2<br />

TABLE 38.1<br />

ITS Projects in Japan<br />

• VICS (MOC, NPA, MPT)<br />

Vehicle Information & Communication System<br />

• ETC (MOC, MPT)<br />

Electronic Toll collection System<br />

• AHS (MOC)<br />

Advanced cruise-assist Highway System<br />

• ASV (MOT)<br />

Advanced Safety Vehicle<br />

• SSVS (MITI)<br />

Super Smart Vehicle System<br />

• UTMS (NPA)<br />

Universal Traffic Management System<br />

Nine Developing Fields of Japanese ITS<br />

1. Advances in navigation systems (ANS)<br />

2. Electronic toll collection systems (ETC)<br />

3. Assistance for safe driving (ASD)<br />

4. Optimization of traffic management (OTM)<br />

5. Increasing efficiency of road management (IERM)<br />

6. Support for public transport (SPT)<br />

7. Increasing efficiency in commercial vehicle operation (IECVO)<br />

8. Support for pedestrians (SFP)<br />

9. Support for emergency vehicle operation (SEVO)

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