If you're still in "Downey Ca" area bear in mind that (in my opinion) CHP uses the chain law to slow people down. And probably not bad idea the way some people don't slow down for conditions. Came over the grapevine couple years ago and maybe 3 snow flakes and bit of ice and they required snow chains. However, it did slow people down.
Mine are not easy to put on. Very little clearance in wheel well. I don't even carry them anymore, law or no law. Listen to weather reports. If in doubt look up a truck stop or something that's open in the area where there might be a problem and call them and ask.
If you travel on a schedule ....different story. And you might not be able to wait out weather.