ᐅ Is it worthwhile to install soundproof windows?

I live on a main road with heavy traffic. The windows are standard double-glazed, about 15 years old. Are soundproof windows worth it? Do they really help with noise reduction?

Yes, certainly; soundproof windows are very effective. Combined with a mechanical ventilation system (so that windows rarely need to be opened), this would provide the best noise insulation in city centers or on main roads.