saw this on the side of the road and had to grab some pods, would love to know what it is.
nitrogen fixing tree
Acacia baileyana - considered an invasive species in much of California
It's not Acacia baileyana. The leaflets are more distinct, the pods are thinner/straight edged and the foliage is not blue-green.
No thorns that I recall and I went into it to retrieve pods. I call it nitrogen fixing because generally trees with legume type pods associate with bacteria that allow for the fixation of nitrogen in root nodules.