When you have an hour or two of free time, drive around all the back roads between your house and where you work. I used to have a 17 mile commute on the freeway but took the time to learn all the alternate routes on surface roads, as well as which neighborhoods to absolutely avoid. If anything major happens while at work, you will want to get home as fast as possible. So will everyone else. It was helpful several times when major accidents locked up traffic.

While we're on the subject, make sure everyone in your family knows Plan A and Plan B in case of major catastrophic event while in separate locations. Will you all make your way home? Who will pick up younger children from school? Do you know that schools have the "right" to lock down your kids indefinitely? Would you want your kids to "escape" lockdown and make their way home? Make sure all responsible adults in your family are on the school's list as authorized to pick up the kids.

Discuss various scenarios, and have everyone participate in creating potential scenarios for the group to evaluate. Make sure everyone knows and understands the reasoning behind your thinking, so in case they ever have to wing it they have a better chance of choosing the right plan of action.

When SHTF, there's a good chance your family will be spread out in various locations. Every vehicle needs a get home bag, with walking/hiking shoes, jacket, hat and gloves as appropriate to the season, water and energy bars, cash, tube of sunscreen, emergency blanket, small flashlight, and paper road maps (free to AAA members). In my state, I also keep a loaded pistol and extra mags and a box of 50 rounds, tactical belt and holster, and in winter a shovel to dig out of snowbank.