I was in the Golden State in April, 2003 for my last business visit. I watched workers install Fed mandated green mile posts on I-5 like every other state has while dining at my favorite Jack in the Box at Santa Nella. Exit numbers were to match mile posts. New England states were next to get mile post matching exit numbers. New England states had sequential interstate exit numbers.
I didn't look forward back then to my California business visits. I can only thank the Great Father no one pays me to go there now.