[This comment is now included under the image in question]
The little table about cars and trucks compares the crossover speed above which tyre noise surpasses drivetrain noise.
Graph:
Car noise sources, ICE drivetrain with a notchy transmission.
Meaning:
The constant traffic roar in the suburbs will continue, because at dual carriageway speed, eliminating drivetrain noise has minuscule effect on total noise.
I’m failing to see how the first image is relevant. Isnt that comparing cars and trucks, not electric and ICE?
[This comment is now included under the image in question]
The little table about cars and trucks compares the crossover speed above which tyre noise surpasses drivetrain noise.
Graph:
Car noise sources, ICE drivetrain with a notchy transmission.
Meaning:
The constant traffic roar in the suburbs will continue, because at dual carriageway speed, eliminating drivetrain noise has minuscule effect on total noise.
Thank you!