Just spoke to a Vancouver City Parking Enforcement officer re parking in the white triangles. He said he's 'old school' so he didn't write motorcycles parked in the white triangles. However, he said management just came down recently with a directive that ALL motorcycles parked in white triangles will be dealt with.
Be careful where you park because I've seen some pretty atrocious pickups by the tow company. Sure you can sue them but it sucks when your bike gets scratched up in the first place.