Verizon Wireless Inc. plans to announce a new high-speed data service in the Washington area that would allow mobile users to connect to the Internet at speeds as fast as or faster than those provided by cable or telephone wires.

The Evolution Data Only (EvDO) network will allow users of compatible wireless devices to download large files such as spreadsheets, inventory lists and even video in a matter of seconds while on the go. Verizon Wireless plans to launch the service in the late summer, with coverage initially limited to an area inside the Capital Beltway. The service will also be launched in San Diego around the same time.