Hey, hoping the locals can help me out with this basic question. I read through the UDOT advisories for today and saw snow chains required or advised in some instances. If the chains are required does that mean i need to have them on my wheels or in my car? Also, is this applicable to 4wd? i ask because I will be headed to SLC this fri skiing through tues and would like to be prepared for anything that may prevent me from skiing.