Beginning in the spring of 1996, a new service will be
launched in the Tokyo metropolitan area to provide drivers
with real-time information about traffic conditions via car
navigation systems. If it catches on, the service promises
to reduce traffic snarls and take a bite out of pollution.
Today's car navigation systems track a car's ever-
changing position on an on-screen map by means of satellite
transmission, indicating the route to one's destination with
arrows or a computerized voice. Full-fledged systems came on
the market some five years ago, and they are selling at an
increasingly rapid clip. Sales increased 10-fold between
1992 (30,000 units) and 1994 (300,000 units), and it is
projected that approximately 500,000-600,000 of these
electronic navigators will be attached to Japanese
dashboards this year.
The big drawback of car navigation systems is that they
are unable to determine the fastest way to one's destination
or estimate the time of arrival because they have no way of
taking into account traffic jams, accidents, or other
variable road conditions. To address this shortcoming, the
Advanced Traffic Information Service has been introduced
around Tokyo. ATIS makes available traffic updates compiled
by the Tokyo Metropolitan Police Department to car
navigation systems. The service's appeal is limited,
however, because it only covers the Tokyo area and requires
a user fee, as it relies on wireless telephone circuits to
transmit data to drivers.
(The above article, edited by Japan Echo Inc., is based on domestic Japanese news sources. It is offered for reference purposes and does not necessarily represent the policy or views of the Japanese Government.)