Here Global B.v.

Siemens Aktiengesellschaft

Yunjie Zhao

Joshua Thompson

Gavril Adrian Giurgiu

Anton Anastassov

Systems and methods for using a plurality of probe reports to augment a geographic database with traffic volume data. The plurality of probe reports are identified for a road segment for a time period. A probe value is determined for the road segment for the time period based on the plurality of probe reports. A probe probability value is calculated for the road segment for the time period based on the probe value. The probe probability value is adjusted using road attributes. The adjusted probe probability value is used to estimate traffic volume. The geographic database is augmented with the estimated traffic volume.

Traffic volume estimation

A method and apparatus for providing navigation services including illumination data. A request for a route is received with one or more preferences related to illumination for the route. One or more road segments that have illumination road attributes that correspond to the one or more preferences are selected. The illumination road attributes are calculated as a function of high beam frequency for the one or more road segments. The route is generated including the one or more road segments. The route is provided with the illumination road attributes.

Mapping road illumination

A method and apparatus for mapping road illumination. A server receives high beam data. The server receives roadway conditions. The server calculates a high beam frequency for a road segment based on the high beam data and the roadway conditions. The server calculates road illumination from the high beam frequency. The server augments a geographic database with road illumination information.

Growing community of inventors

Chicago, IL, United States of America

Yunjie Zhao