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There are two numbers on the sticker for fuel efficiency. In-town and highway. For in-town weight matters greatly (both because you essentially throw away ene
by aidenn0 3y ago
There are two numbers on the sticker for fuel efficiency. In-town and highway.
For in-town weight matters greatly (both because you essentially throw away energy every time you break, and because rolling-resistance matters more at low speed).
For highway, up until 2008 the maximum speed tested was 55, which disadvantages heavy-vehicles, as rolling resistance is a higher component of energy used at lower speeds (as a simple approximation, rolling-resistance is linear, and air-resistance is quadratic).
- sidewndr46 3y agoThe thread was specifically about a road trip. I can't imagine anyone taking a road trip entirely in town.
- aidenn0 3y agoI've done road-trips entirely off of limited-access highways.
- bialpio 3y agoDriving around Yosemite or Yellowstone is gonna be closer to in-town riding than to highway riding. I wouldn't be too surprised if time spent on driving at the destination was ~50% of my driving time at some road trips I took.