Bollards CAN be designed to lower and raise but I don't think any on Pandora have this functionality and I'm not sure why they would have it.
Solar powered because they illuminate. Making it easier to note the end of the concrete curbs presumably. Haven't driven Pandora in the dark lately so I'm not sure if this is actually an issue or how lit bollards would help.
Did you not go on TV a few months ago and point out the dangers of bollards on cycling trails? I seem to recall a few videos posted of cyclists crashing into bollards.
Have the designers not listened to that debate?