RideshareOnline.com is a free, statewide service that introduces commuters to others who might want to vanpool or carpool to work together. RideshareOnline.com also assists operators in developing new vanpools or finding riders for existing vanpools.
WSDOT invested in expanding RideshareOnline statewide early in 2005, contributing to nearly doubling the number of visitors in the first nine months of the year compared with the same period in 2004. As of September 2005, nearly 13,000 individuals had sought ridematch information from the online service. A survey is being developed to track successful matches and the persistence of the groups formed.
Data on ridesharing registration comes from King County Metro Rideshare Services. RideshareOnline is also used to locate carpools for travel to special events in King County.