Caltrain declared its trial of uninterrupted wireless Internet access on one of its trains a success. The test forms part of the transit agency’s plan to offer free wireless Internet service on all its trains within a year. Upgraded service, according to Caltrain spokeswoman Rita Haskin, will be available for a fee. The project will use a combination of WiFi antennas and WiMax Internet towers to ensure consistent connection. The agency is hoping that the new initiative will attract more customers, which currently number over 35,000 each weekday.