1
Aaron I Crane, Joseph R Roberts, Frank J Kozak: Method and system using positions of cellular phones matched to road network for collecting data. Navigation Technologies, Frank J Kozak, Lawrence M Kaplan, April 30, 2002: US06381533 (66 worldwide citation)

A data collection system and method match the positions of one or more cellular phones, or other types of wireless phones, to data indicating the locations of roads in a geographic area to derive data about phones located in vehicles traveling along the roads. The data about phones located in vehicl ...


2
Crane Aaron I, Roberts Joseph R, Kozak Frank J: Method and system using positions of cellular phones matched to road network for collecting data. Navigation Tech, March 7, 2001: EP1081666-A2 (5 worldwide citation)

A data collection system and method are disclosed that match the positions of one or more cellular phones, or other types of wireless phones, to data indicating the locations of roads in a geographic area to derive data about phones located in vehicles traveling along the roads. The data about phone ...