I have had this happen too. It is unnerving as there is definitely more at play than simply not taking that step or stepping on the pedal to get going ITMS. I am reading a classic book ATM ("all quiet on the western front") and the character talks about this a bit in the book about when the shelling (it's set in the first world war) is taking place and how after a little while, without reasonable explanation the soldiers are able to "sense" happenings in the world around them before they happen (and thus are able to take shelter earlier than if they had of just used their conscious mind ITMS). i found this point really interesting as i do think it is about tapping into that subconscious and learning to 'listen' to the wider world connections...

For me, i had a moment a few months ago (that i wrote about i think) where i had this split second vision of a car running the red light (i was about to cross with DD2 in the pram). so i hesitated and the woman beside me also hesitated after she saw me pull up quickly and sure enough the car i "saw" came flying through the light and would of taken us all out. the woman looked at me and said something along the lines of 'lucky you stopped us'. i was unable to really respond as it was weird in that i was still in some kind of 'zone' or something. very spooky.