Traffic safety and road traffic capacity are seriously impacted by the unfavorable weather conditions. Traffic environment information （TEI）acquisition and exchange is significant foundation to solve incident events caused by adverse weather. This paper proposes a TEI acquisition and exchange architecture based on service-oriented architecture (SOA) aim to realize TEI data sharing and the intelligent event management of special highway sections, and provide good TEI foundation for cooperative vehicle infrastructure system (CVIS). This paper is divided into three sections. Firstly, introduce the contents (include atmosphere data, pavement data, etc.), methods and standards of TEI acquisition used in China and international and then put forward the problems existing in TEI acquisition and exchange. Secondly, the TEI acquisition requirements for special sections of freeway are proposed through analyze operating principle of CVIS and its demand of TEI combine with five different freeway sections. Finally, the TEI acquisition and exchange architecture for CVIS is established from three aspects according to the demands.

CICTP