Navteq North America, LLC

Navigation Technologies Corporation

Navteq B.v.

Eric N Groth

Timothy A McGrath

Lumumba Mbekeani

James Herbst

Steven P DeVries

Andrew Calkins

Michael L Kaufman

Suzanne McGrath

Christopher S Page

A method and system for determining energy efficient routes is described. Map data represents road segments. Energy consumption data is obtained while a vehicle travels on a first road segment. Energy consumption data associated with the first road segment can be used to predict the expected energy consumption when traveling on a second road segment that has similar physical attributes to those of the first road segment. The predicted energy consumption data may be used to determine whether the second road segment is part of a most energy efficient route.

Energy consumption profiling

A system and method are disclosed for displaying map information on a computing device. Data are stored for rendering a simulation of travel along one or more road segments prior to embarking on travel along the road segments. The simulation is comprised of a sequence of views of the road network along each road segment from vantage points above or along the road network. Each road segment may be part of a calculated route and the simulation may include views for all the road segments contained in the calculated route. While the computing device is being conveyed along each road segment, the data stored for the simulation is used to show a view of the road network that includes the current position of the computing device on a display of the computing device.

Map display for a navigation system

A method for developing traffic messages for broadcast is disclosed. Data indicating a plurality of traffic conditions on a road network are obtained. For each of the traffic conditions, the data provides a start location at which the traffic condition begins and an end location at which the traffic condition ends. For each of the traffic conditions, a road length from the start location to the end location is determined. The traffic conditions are assigned a priority based upon the road lengths. The data indicating the traffic conditions are transmitted in the assigned priority as a plurality of traffic messages.

Method and system for developing traffic messages

A method for developing traffic messages is disclosed. Data indicating traffic speed at a plurality of locations on a road network are obtained. Each of the locations is assigned a unique location reference code. The data indicating traffic speed for the location reference codes assigned to locations along a road of the road network are evaluated. Locations reference codes along the road having related traffic speeds are grouped into at least one congestion event along the road. The congestion events are transmitted as traffic messages.

A system and method are disclosed that provide traffic information to end users. The traffic information is contained in traffic data messages that use location reference codes to identify locations along roads. A data structure is formed that relates a set of location reference codes assigned to locations along roads by a first data supplier to another set of location reference codes assigned locations along roads by a second data supplier. The data structure is used to form traffic data messages containing location reference codes assigned by the first data supplier based on traffic data messages containing location reference codes assigned by the second data supplier.

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Buffalo Grove, IL, United States of America

Eric N Groth