That is an idea, but it has nothing to do with this post. You’ve taken my criticism of OP and spun it into something completely different. The post isn’t about the safety of the bike lane. It’s about the supposed hypocrisy of closing down the car lane while doing construction work in it. It’s asinine. You can piss and moan about the barriers not being enough, but regardless of the device being installed, closing off that section of the car lane (and bike lane for that matter) is the only prudent thing to do for the safety of those workers.