slow down, stop. whatever it takes. it doesn't matter if he slowed down, spun, or got out and had a picnic. without a signal don't pass. follow the rules. don't worry about who's behind you, as long as he's following the rules you'll be ok. if i can't trust the other guys on the track to follow the rules, then i may be tempted to not follow the rules myself in order to avoid the other guys that are not following the rules. then it all breaks down. chaos. cats and dogs living together.
mebbe this will work ...
https://1drv.ms/v/s!AgB7dLY3uFssuQhLyTk1oYsdlJZ2