WSF Rideshare Program Ferry Perks for Vanpools and Carpools: Sharing the ride during your commute benefits you in two ways: money saved in gas and time saved in ferry lines. WSF gives preferential loading on specified sailings for registered Vanpools and Carpools. WSF Vanpool Program Requirements To join you must: 1.   Commute with at least four other people (maximum 15). 2.   Use your Vanpool at least three days a week for a minimum of 9 months. 3.   Get a Rideshare license plate from the Washington State Department of Licensing if using a private vehicle. 4.   Register as a Vanpool with WSF. If you meet the above requirements; Your permit will be valid one year from the date of issue. If renewing online, allow 4 days minimum. If renewing by mail, allow 10 days.  Register / Renew a Vanpool » WSF Carpool Program Requirements To join you must: 1.   Commute with at least two other people. 2.   Use your Carpool at least three days a week for a minimum of 9 months. 3.   Register as a Carpool with WSF. If you meet the above requirements; Your permit will be valid one year from the date of issue. If renewing online, allow 4 days minimum. If renewing by mail, allow 10 days.  Register / Renew a Carpool »