I'm not a UPS driver, but roughly follow this rule when driving and pick routes based on it. I've done so since before I heard about the whole UPS thing, as it

I'm not a UPS driver, but roughly follow this rule when driving and pick routes based on it. I've done so since before I heard about the whole UPS thing, as it makes sense to me, so when I heard that UPS did it too I was like, oh so it's not just me. But alas... maybe it truly is just me.