Is it worth installing soundproof windows?

Live on a main traffic road. The windows are regular, about 15-year-old double-glazed windows. Are soundproof windows worth it? Do they really help in terms of noise protection?

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