Denso Corporation

Toyota Mapmaster Inc.

Masahiro Miyoshi

Hiroki Ukai

Kiyotaka Taguchi

Makoto Yano

Masayuki Narita

Cheng Li

Masahisa Nogawa

Provided is an apparatus and method for automatically creating stopping rates of vehicles at signal-equipped intersections. A signal-equipped intersection to be subjected to specifying of stopping rates at signal-equipped intersections is selected from a signal-equipped-intersection information storage unit as a target intersection, a pass-through-intersection extraction that extracts a signal-equipped intersection that was passed-through just before reaching the target intersection as a pass-through intersection is conducted according to a prescribed rule, driving-history data of a probe car is classified for each of the routes that start from the pass-through intersection and pass through the target intersection, and the rate at which the probe car stopped at the target intersection is specified as a stopping rate, for each of the classified routes.

Intersection-stopping-rate specifying apparatus, navigation apparatus, computer program for specifying intersection-stopping-rate, computer program for conducting navigation

A route retrieval apparatus is disclosed. The route retrieval apparatus includes a storage component, a first correction component, a second correction component and a retrieval component. The storage component stores therein probe information to specify fuel consumption in each section, the probe information having been collected from probe vehicles. The first correction component corrects gradient information of each section based on the specified fuel consumption in the each section. The second correction component corrects a fuel cost of each section based on the gradient information corrected by the first correction component. The retrieval component retrieves, by using the fuel cost of the each section corrected by the second correction component, a route with a lowest total of the fuel costs from a departure point to a destination point.

Route retrieval apparatus and navigation apparatus

A vehicular swept path processor and a map matching processor calculate a current position of a subject vehicle. A gyro sensor and a steering sensor output detection signals. A POI recognition processor makes a determination as to whether the vehicle stopped off at a POI or not based on the calculated current position and the outputted detection signals. When the determination is affirmatively made, i.e., the vehicle is determined to have stopped off at the POI, the POI recognition processor calculates a recognition confidence degree relative to an accuracy in the determination. A vehicle control ECU controls an in-vehicle device such that the in-vehicle device performs a predetermined operation corresponding to the POI in a mode according to the calculated recognition confidence degree.

Positional information use apparatus

Growing community of inventors

Kuwana, Japan

Masahiro Miyoshi