University of Leicester researchers found a link between noisy road traffic and increased risk of hypertension. Previous studies suggested it was unclear how noise or air pollution affected blood ...

That is, does the noise come from tire/road contact (so no change) or from the engines (great change)? Does the vehicle speed matter, as in highway noise vs. local connector road noise?

Finding a way to attenuate especially the low-frequency noise of road traffic was the subject of [Joe Krcma]’s Masters Thesis, the results of which he gave a talk on at the Portland Maker Meetup ...

Essentially the system uses a strip of foam which wraps around the inside of the tyre to reduce road noise as much as possible without any knock-on effect on grip, response or durability.