Dont be TOO hesitant, the amount of times ive shouted "GOOOOOOO" at a roundabout or junction is unbelieveable!

And something else, when its dusk but not dark i.e you could see without lights if you had to and headlights dont even light up the road, then why use headlights? just use side lights as for me it actually impares vision for oncoming cars if its not dark and you have a pair of headlights coming towards you