As others have said it's the trip fall risk that worries me most. I was out early one morning last week and it had been a really wet and windy night . I nearly put paid to all my training as I spotted a large tree branch right in front of me when a car was passing. Luckily my last second hurdle worked but it could have been disaster.
I have a good head torch and it was that which saved me but only just.
I did also worry when I found I was out a lot at the same time of day on the same route, I'm not keen on that as it gives people the chance to plan which I feel is more likely than a random in the moment act as it were.
Finally I go out lit up like a Christmas tree and say hello to everyone I meet, wave at cars etc I figure it's a good thing to be noticed just in case the worst happens someone will remember seeing me before hand. Apparently it can also put people off if they realise you are being noticed.
As ever there's no guarantees in life, but life's to short to stay at home.