The best way to win a fight is to not get into one. The best way to avoid zombie attention is to not announce your presence.
That means you should first of all invest in light-proof curtains. Yes, you won’t be flipping the switch for long, when the power goes out it will go out, but that doesn’t mean fire doesn’t work. And when it gets cold, you’ll have to have a fire to stay warm. Fire means light, and light attracts attention.
Curtains? In the daytime, a little sunlight is a nice thing. Get a tan, don’t burn precious fuel to read by, and remind yourself, “Hey, I’m not undead today.”
Second, non-obvious barriers to “redirect traffic.” If the hordes are shuffling around, they will go where they can, so if your location presents a physical impediment, they will pass you by.
This does not mean an apron of barbed wire, topped with concertinas of razor wire. First, it is clearly a barrier, and will attract attention of the non-zombie type. Second, if they get tangled up in it, they’ll just thrash and moan, and attract more zombies. A couple of wrecked cars, winched into position to block a street at an intersection, will not be too obvious, and the zombies will most likely just shuffle on by.
Third, solid walls. Some zombies may retain basic tool use, depending on the nature of the affliction, so that means simply slapping a coat of paint on the windows does not create a solid barrier.
Hey, the world has collapsed, along with real estate values. Pick a location that has solid ground-floor walls. The city isn’t going to send someone around to collect on property taxes’ get some elbow room and inside storage of vehicles.
And last, be picky about the vehicles you use. Noise is an attractant, and you can afford to select vehicles that have a good muffler. Do so.