Think of it in 3 parts
Observation Is there a junction coming up, is one lane moving faster than the other, can I see what's in front of that HGV etc
Confidence Basically having the confidence in your own abilities so your relaxed and as such can be more focused on the road and other traffic than worring about your own riding
Luck At the end of the day a little bit of luck comes into it as no matter how ewell you plan ahead it's human nature to do something unpredicatable.
Just go as fast as your comforatable and you'll find your get faster as your confidence grows, but don't let over familarity with your daily route let you take silly risks, I did
