They've replaced the bollards. Although every time I go by, there's at least one knocked down which I have to re-seat.

Maybe they should be concrete?

Fixed!

I've come to the conclusion that the plastic bollards as implemented are effectively useless. I pass by these virtually every weekday, and there is always at least one knocked down. Every day I replace them, and the next day more are down again.

I believe this highlights the exact reason the bollards were put there in the first place -- to protect cyclists in the bike lane from cars turning right through the lane.

These should be replaced with permanent fixtures which stand a chance at actually preventing what they attempt to.

Picture of missing bollards, from this morning.

Agreed that this is a problem. Bollards should be constructed of a material that will both withstand and discourage contact, likely metal or concrete. How about a Jersey barrier? Undoubtedly, motorists have learned that driving over the existing plastic bollards has no adverse effects on their vehicle. Scarce city resources are being used to constantly replace these.

Also, I should note, these are very useful in forcing [most] motorists to slow down and take a wide turn, which helps immensely for preventing cyclists in the bike lane from getting squashed. Fix the issue, but don't discard the concept.

I find motorists travelling eastwards on Edgewood turning right onto Krog are liable to cut me off with the dreaded "right hook" when I'm cycling straight through intersection between the bollards and curb. A more effective strategy would be the "stop line" for cars to be painted further back (~10 feet) and a separate "stop line" for bikes be painted forwards so as to be visible to drivers. Instead of the flimsy plastic tubes we should consider a concrete barrier.