Has anybody a solution to this?

Found myself sitting at traffic lights the other night with no sign of any change after a good while waiting. Was pretty late and there was no cars around to help me out (drive over the loop)..

Tried the kicking the stand down trick when going over the loop but that didn’t work. Would rather not have to almost lie the bike down on her side to trigger the lights when there are no cars around!

Has anybody experience with those magnetic blocks you can buy on eBay that glue to the bottom of your bike?