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Large Vehicle Traveling Route Confirmation
Using ITS Spots Public Experiment

KANAZAWA Fumihiko, HeadSUZUKI Shoichi, Senior Researcher
TSUKIJI Takahiro, ResearcherSAJI Hidetaka, Guest Research Engineer
Intelligent Transport System Division, Research Center for Advanced Information Technology(Key words) ITS Spot, probe information, traveling route confirmation public experiment
1. Introduction
As road structures in Japan deteriorate, there is ademand that existing infrastructure be effectively used
longer than in the past, and it is important to monitor theroutes traveled by large vehicles, which impose loads
which have a relatively great effect on structures.
Our division uses ITS Spot services that permit
two-way communication between road side devices (ITSSpots) and on-board equipment (ITS Spot compatible
on-board equipment) as a technology which effectively
clarifies the routes traveled by large vehicles, and isverifying this vehicle traveling route clarification
technology on actual roads. (Shows a map of range inwhich data can be collected.)
Beginning in January 2014, a public experimentconducted by installing ITS Spot compatible on-board
equipment in about 3,000 large vehicles to collect andconfirm traveling route information will be conducted.
This report introduces an outline of this public
experiment.
2. Clarifying traveling route using ITS SpotsITS Spot service, which started in 2011, cancommunicate large volumes of information in twodirections, so it can not only provide road traffic etc.
information to vehicles, but also collect probe
information (traveling history and behavior history ofvehicles).
Using these types of probe information to clarify thetraveling route of individual vehicles is not permitted inorder to protect personnel information. But, it is possibleto clarify the traveling routes of individual vehicles by
especially adding information to identify each vehicle tothe probe information for vehicles operated by companies
which have exchanged permission to use traveling routes
with the Ministry of Land, Infrastructure, Transport andTourism.
3. Outline of the public experiment
ITS Spot compatible on-board equipment will be
installed on about 3,000 large vehicles owned by logistics
companies throughout Japan and probe information will
be collected on a nation-wide scale. Running control

records (daily reports) containing traveling routes will berecovered from some of the commercial operators andthese will be compared with probe information collectedby ITS Spots to verify the probability of the travelingroute obtained from the probe information.
Specifically, based on vehicle stopped time andcontinuous traveling time etc. obtained from the probe
information, it will be verified how accurately locations
where they loaded or unloaded cargoes can be
hypothesized and whether or not it is possible to abstract
a single trip chain. And the precision of travel routeinformation in double-deck sections and in dense urban
districts will also be verified.
Figure. Range where Probe Information can be Collected
Data period: November 2011 to August 2012 (10months)

LegendRoads where data is obtained (expressways)
Roads where data is obtained (national highways)
Expressways
ITS Spots