The case you are referring to is People vs. Mckay, 27 Cal 4th. 601.. this was decided in 2002.
Go to this link...
1. Agree to the terms and conditions.
2. Check the Cal. Supreme Court Published Case box
3. Scroll down to Get Opinion by Cite
4. Select Cal. 4th in the drop down box
5. Enter 27 in first text box and 601 in final text box (27 Cal. 4th 601)
6. Select People versus McKay
As you can see, the California Supreme Court held that a search incident to an arrest for an infraction is not constitutionally prohibited even if it violates an established state arrest procedure.
Please reply if I can help further.
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