Safety

We conducted an experiment to evaluate the ease with which information presented auditorily
from an ITS device is perceived. Before the experiment we measured background noise under
various driving conditions in 6 types of passenger vehicle. From the results we selected 3 representative
types of background noise for use in the evaluation experiment. Several items of
auditory information were presented simultaneously to drivers while they were driving in a
driving simulator, and they were asked to respond orally to the items they could understand.
The results were then compared between the older and younger drivers. When multiple items
of information were presented the older observers had much poorer results than the younger
observers. Even when single items of information were provided, elderly observers could perceive
very few of them when the background noise was high and the presentation volume was
low. The younger observers had better results than the older observers, but even so they responded
to only 0.6–0.8 items when 3 information items were provided. Regardless of a person’s
age, it is preferable not to present multiple items of auditory information simultaneously.

National Traffic Safety and Environment Laboratory, Japan

Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California

According to the successful experiences of highway design in developed countries, elementary
truck escape ramp design schemes are given for China mountainous area’s highway,
based on different kinds of geological conditions, and considering highway factors. Constructive
advices in the design are given too. The study collected data for China Criterion of truck
escape ramp design, and will enhance the safety of mountainous area’s highway.

Transportation Research Center Beijing University of Technology, Beijing China

Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California

The fatigue of the driver is one of the factors of the traffic accident. And it is necessary to ease fatigue
during driving. In this research, we examined whether it was effective to give colors as a stimulation to
the driver in order to reduce the load while driving. We used the color that was one of visual information
as stimulation because 80% or more of external information is visual information. In addition, we used
the color of green because it is said that green has the effect of refreshing. We analyzed the effect of
color from beta-wave content, presumtion of autonomic nervos activity and change of mental load level.
The result of an examination using the driving simulator shows the defference of each index because the
color stimulation was given in addition to usual driving enviroment. It was shown that the color exerted
some influences on the driver while driving by this research.

Aichi Prefectural University, Japan

Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California

We are studying safety driving support systems that are attained by exchanging
each vehicle's movement data through vehicle to vehicle (V-V) communication.
This paper describes a study on the communication protocol. First, the design
methodology for the physical and data link layer (L1 and L2) is described under
an ideal condition, without restrictions in other words, because the basic
specification of the communication system depends on these lower layer
protocols. Next, points for applying it to a practical system are described.

Toyota Motor Corporation, Japan

Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California

Rapidly developing economy evoked the increasing number of vehicles, and the urban traffic is already
overburdened. Nowadays if we cannot rapidly dispose the emergencies, such as traffic accident, vehicle
breaking, illegal driving and bad weather conditions, the traffic congestion will be diffused quickly, and
sometimes even worse to lead the local traffic paralysis. As to the emergencies have some
characteristics of the frequentness and uncertainty on time and space. It is a desirable problem
to solve among the major cities nation-wide that how to enhance the rapid response capability
to these emergencies, where the traffic policemen should appear immediately when they are
needed, how to avoid the diffusing of the traffic congestion and the traffic paralysis, etc.
Therefore we’ll introduce you the functions and characteristics of the Rapid Responding and
Disposing System of Road Traffic Emergency developed and used in the city of Dalian, China.
The followings are some details such as finding and disposing the road traffic congestion
rapidly, establishing and implementing the per-plans for special safekeeping assignments,
monitoring the illegal vehicles and traffics, real time traffic information transferring, and the
evaluating of the on duty policemen’s work.

Dalian, CHINA

Presented at the 12th World Congress on Intelligent Transport Systems, November 6-10, 2005, San Francisco, California