Visitors to downtown Santa Rosa will be able to ride a new trolley connecting Old Courthouse Square and Railroad Square beginning next month. Rose-E, an electric trolley, will start service on May 15th and provide stops at shopping and dining destinations, hotels and at the downtown SMART station. It will operate five times a week and run through September 29th as part of a pilot program launched by the Downtown Action Organization, which oversees the city’s downtown community benefit district.