Some of the key players in the ETC market are Honeywell International , Inc. , Transurban , Transtoll Pty Ltd. , Transcore Holdings , Inc. , Toll Collect GmbH , TRMI Systems Integration , Sensor Dynamics , Xerox Corporation , 3 M , Connect East , EFKON , SAIC , DENSO , Q - Free , Mitsubishi Heavy Industries , Ltd. , Perceptics , Thales Group and Kapsch TrafficCom AG .