On: How Much Does a Mile of Road Cost?

[kevin_thibedeau]

In the US there is no priority with 3+ lanes. You can legally plod along in the left lane without passing anyone. The middle is a safe option to avoid conflicts on either side. For two lanes you are supposed to leave the left/high-speed lane for passing only.

[masonic → kevin_thibedeau]

  In the US there is no priority with 3+ lanes

There is no monolithic Nationwide vehicle code. Laws can vary state to state.

  You can legally plod along in the left lane without passing anyone. 

Generally false. Definitely false in CA: Slower traffic keep right, notwithstanding speed limits.

[nitrogen → kevin_thibedeau]

That really depends on the state. In Utah, for example, the law requires left lane drivers to move over if they are being passed on the right. Some other states explicitly designate the left lane for passing only.