Day permits may be purchased at the LOPP trailer. The LOPP trailer is located at the corner of 9th avenue and East Cliff Drive (Twin Lakes Beach) from 10am to 5pm on weekends and legal holidays, beginning the first weekend in April through the first weekend in September. Day permits are nontransferable between vehicles and valid only when properly displayed on the day it was purchased. Vehicles properly displaying a Disabled Placard or a Disabled Veteran Plate, are not required to purchase a day permit. The day permits are valid between 5th Ave to 38th.