Home Q&A: My terraced house is on a busy road. Is triple or double glazing best?

I have a terraced home on a busy road. What’s better, double or triple glazing? How much more does triple glazing cost?

Quality double glazing can come close to the performance of triple glazing in terms of its thermal, acoustic and security performance. File pictures

Question

I have a terraced home on a busy road. What’s better for my home, double or triple glazing? How much more would I pay for triple-glazed units in general?