[lisper]

Depends on the street. Once you get above a certain speed most of the noise is tire noise, not engine noise.

https://en.wikipedia.org/wiki/Roadway_noise

[johndough]

In my experience (living a mile away from a motorway), most of the noise is caused by the wheel bearings of badly maintained lorries instead of tires. One can usually tell by the high pitched noise.

[catalogia]

I'm surprised that noise propagates far enough for you to hear. In my experience, the noise that propagates furthest from roads is the low frequency tire rumble.

[sova]

Hypothesis: you are both correct, your respective acoustic environs different

[jacquesm]

Here it's the tires moving across the seams between adjoining panels on bridges that make the most noise, those you can pick up from very far away.

[groby_b]

Unless you live in a city, in which case most of the noise is emergency vehicles ;)

I'm extremely skeptical this is something that can be addressed by noise cancellation, either.