I left out the world "[city] center" from my comment. Crime may well be a risk in certain neighborhoods that a visitor need not go to. But walking or cycling ac

I left out the world "[city] center" from my comment. Crime may well be a risk in certain neighborhoods that a visitor need not go to. But walking or cycling across the city center does appear to be safe based on the following: * Upon arrival at the bus station I ask staff if they can recommend a safe route for me to cycle (I had a touring bike) the several km to near the US border. They say the center is safe, the bad barrios are elsewhere, and it was a bit silly that I would even be worried. * I ask the first police I see the same question and get the exact same answer. * I am occasionally passed by lycra-clad locals on expensive bikes. Here and there I see a lot of conspicuous American tourists of the fanny-pack variety walking around, mainly elderly. These are the sort of things that would not be done if people had to fear for their lives. * I go into an Oxxo for some snacks and ask the clerk about safety. He says it hasn't been a concern in that central area for a long time now. * I stand in a queue for two hours to cross the border. The people around me in the queue, Mexican and American alike, say safety hasn't been an issue in the city center for a long time now. That is a difference from a couple of decades ago, when one was warned about even the city center and even in daytime.