Fwiw-
drove thru/past the one in my area early Thursday evening
it was a good experience from an auto drivers point of view. It was a busy evening with minimum of 6 cars 3 in each direction & and on the MUP quite a lot of ppl & at least one bike that I remember
as I approached I saw pedestrians push the button. The lights turned yellow then red the cars stopped the ppl crossed the lights went from solid red to flashing red the ppl were clear so the cars proceeded. It all seemed very efficient
however it did seem pretty quick which in this case seemed to work OK
some day I’ll bike thru it & see what it’s like from that perspective