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redpoint5 · 02-07-2015, 12:27 AM

GPS is among the best tools readily available. Most are good to within 12 ft or so.

My experience is that mile markers are generally very accurate. I would put almost an equal faith in both mile markers and GPS.

I broke my UG and don't remember if the increment is as low as 0.1%, but I would guess that it is. That level of error in 1 mile is equal to 5.28 feet (5280 * .001)

02-07-2015, 12:27 AM	#4 (permalink)
redpoint5 Human Environmentalist Join Date: Aug 2010 Location: Oregon Posts: 12,468 Acura TSX - '06 Acura TSX 90 day: 24.19 mpg (US) Lafawnda - CBR600 - '01 Honda CBR600 F4i 90 day: 47.32 mpg (US) Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base 90 day: 21.82 mpg (US) Chevy ZR-2 - '03 Chevrolet S10 ZR2 90 day: 17.14 mpg (US) Model Y - '24 Tesla Y LR AWD Thanks: 4,214 Thanked 4,391 Times in 3,365 Posts	GPS is among the best tools readily available. Most are good to within 12 ft or so. My experience is that mile markers are generally very accurate. I would put almost an equal faith in both mile markers and GPS. I broke my UG and don't remember if the increment is as low as 0.1%, but I would guess that it is. That level of error in 1 mile is equal to 5.28 feet (5280 * .001) __________________ Gas and Electric Vehicle Cost of Ownership Calculator Give me absolute safety, or give me death! Last edited by redpoint5; 02-07-2015 at 12:42 AM..