Loud pipes, an aftermarket horn and hi-viz won't reduce the risk of loss of life or injury if that's all you rely on.
Watch the car ahead of you, and the one ahead of that, and the one ahead of that. And the one behind you.
Own your lane - it's yours to use so don't ride in the gutter - aim slightly left of centre.
Horse shit on the road is to be avoided, so are the horses you'll find around the next bend.