Note: The daily storage charge under par. (b) or (c) can be collected by a towing service the first minute after notice of the tow is given to a law enforcement agency by the towing service. A second daily storage charge cannot be collected until 24 hours after the time at which notice is given to law enforcement, subject to the limits for closed storage facilities specified in s. Trans 319.03(4).
Note: Pursuant to s. 349.13(3m) (dr)2, Stats., a towing service is prohibited from collecting any charges for the removal or storage of an illegally parked vehicle towed under s. 349.13(3m), Stats., if the towing service has not complied with the requirement under s. 349.13(3m) (d)2, Stats., to notify law enforcement prior to removing the vehicle.
Wis. Admin. Code Department of Transportation § Trans 319.03
In general, the storage charge is the whole number of days from towing until retrieval, multiplied by the storage charge rate specified under s. Trans 319.03(1) (b) or (c). However, this subsection prohibits a daily storage charge for any calendar day during which the storage facility is open less than 4 consecutive hours between 8:00 a.m. and 5:00 p.m. for vehicle retrieval. For example, consider a vehicle towed at 10:20 p.m. on Friday and retrieved at 10:00 a.m. on Monday, and stored at a facility that is open for vehicle retrieval on Saturday from 10:00 a.m. until 2:00 p.m., closed Sunday, and open Monday from 10:00 a.m. until 10:00 p.m. The vehicle was stored for a period of three days, but the vehicle owner cannot be charged for one of those days of storage since the storage facility was not open for vehicle retrieval on Sunday; only two days of storage are chargeable by the towing service.