Everybody makes their own decisions in this area. I choose to be much more conservative than the official guidelines. I came to that conclusion by monitoring my radiation levels on a regular basis and having a strong desire to NOT expose friends, loved ones, caregivers to unnecessary radiation. Driving home is fine, with an acceptable level of radiation exposure, although I do drive myself in order to not subject my wife to even that level of exposure. I just had treatment #5. My personal protocol protocol is to isolate myself for a week (not "three feet" like they say, but real isolation - sleep alone, no physical contact whatsoever), and then allow brief minimal contact (a hug, a handshake, being in the same room but still maintaining the three foot separation) for the second week after treatment. During that two weeks my radiation level continues to decline on a daily basis but I keep measuring it so that I know what my condition really is and how much radiation exposure a person would have from me by being in my proximity. At the end of two weeks my radiation level is minimal and I am back to full contact mode - sleep in same bed, kissing OK, snuggling on the couch watching Netflix, etc. We each make our own decisions in this area.