Yeah, I really think you need to re-read my original post:

I was talking about spotting traps whilst already moving, if your characters are walking a route that will take you over newly revealed traps then they will do so; I stated that your party will avoid them if they already stationary and you then start moving, what I want is for them to stop when they spot a trap whilst they are already moving.

Again, in combat, I explained that I can understand why you might want to move in a straight line, I would like an option which allows you to choose to have your characters avoid treading in fire or poison areas. I said that I have tried navigating around these areas, but sometimes you find that you still catch the edge of them even when trying to avoid them.

This isn't rocket science, it's common sense options.