Heavy vehicles and busses make our building shake

We live on Northwold Road, just next to the top of Norcott Road. It is one of the busier cross streets between Stoke Newington and Clapton in Hackney. The road has a 20mph limit and traffic calming methods in place (speed bumps and narrowed sections).

The busses and other heavy vehicles make our windows shake badly on the 2nd floor, but the main problem is the third floor. When busses hit the near side of the speed bumps too hard, it makes our roof shake and cracks are appearing all over the top floor.The busses at quiet times of the night are the worst as they are often exceeding the speed limit and hit very hard. It would be helpful to find a solution, as I worry it will make the house unsafe if it goes on for a long period.