Seen from a different angle, now with a fancy white house and a passing yellow bus in the background: the special railing by traffic lights that is designed so cyclists can stay upright on their bike, ready to go, while resting their arm and foot while waiting for the lights to change to green. Fuller description in the other photo in this toot.
https://files.mastodon.green/media_attachments/files/112/784/986/274/710/622/original/80a00e7b05ddacf9.jpg