Can anyone help me PLEASE

Breeze is nearly 1 year old now (in 2 weeks time) and I can't walk her along roads as she is petrified of traffic. Yesterday, she pulled me through a hedge to get off the road. I bought her a halti today as she is a very powerful dog and at 35kg and growing (she is filling out now) I really want to conquer this quickly.
As a puppy, I did take her for walks along the road and she was fine, but as she gets older and bigger, she has got worse.
Has anyone go any ideas to stop this unwanted behaviour?