from Jon Visser of WCC:

“I have confirmed with our parking contractor that:
“For parking restrictions indicated with a blue & white sign, these restrictions only apply between the hours of 8am and 6pm unless the sign specifies a different time period or ‘at all times’. While the law now allows this to be enforced seven days a week, our current response is to only enforce this Monday to Saturday. Outside those hours (and on Sundays at our discretion), unless otherwise stated, anyone may park in those spaces for as long as they like.”

This means that at night, unless the sign says “at all times”, cars can use motorcycle spaces.

It also means that, between 6pm and 8am the following day, unless the restriction on the sign specifically says otherwise, motorcycles can use car parking spaces like Pay and Display spaces and Loading Zones.”