Driver A drives 70 mph
Driver B drives 55 mph
scenario 1, both drive 100,000 miles per year.
Driver A uses 1429 hours driving.
Driver B uses 1818 hours driving.
difference of 389 hours or 7.8 hours per week. Nearly a full shift !
lets say all else is equal, same truck, route, etc... can we say the 70 mph guy gets 6.2 mpg and the 55 mph guy gets 7.4 ?
driver A uses 16,129 gallons
driver B uses 13,514 gallons
2,515 gallons = $7545.00 saved by driver B, now if we consider his extra 389 hours we could say he got paid $19.40/hr for his time. not awful, but not exactly stunning considering 1.2 mpg better.
scenario 2. let's say instead of calling it a day driver A works the same hours as driver B.
In this case driver A would get 127,260 miles in the same time (1818 hrs) it took driver B to get 100,000. Gets a bit tricky here because A's miles are more expensive, he uses more fuel. It comes out to 0.08/mile more. However !! His fixed costs divided by more miles ! So let's say he picks back up 0.02/mile that way. A - $1.26, B - $1.20. lets say they both average $2.15/all miles, driver A would net $113,450. driver B would net $95,000. for driving the same amount of hours, and B getting 1.2 mpg better @ 55.
sure, this is hypothetical. In the real world it may be dictated load by load based on time available, but it's something to think about. numbers change with $4 or $5 fuel too, big time.
Driving for fuel mileage
Discussion in 'Ask An Owner Operator' started by dannythetrucker, Apr 1, 2015.
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Oxbow, Johny41, Numb and 1 other person Thank this.
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I've been saying it for yrs.
the megas are preaching it and I ain't buying it.
the insurance companies came up with this 20 yrs ago.
discounts for slower trucks
slower trucks, less damage in an accident.
more miles/day=more loads=more $dannythetrucker Thanks this. -
Their are times it makes Sense to go Faster, I.E. arriving at a shipper or consignee before they close. but too drive at the higher speed when you know you will not make cutoff time does not make sense to me.
Oxbow, Big_D409, greatbargins10 and 3 others Thank this. -
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Note: I don't care what someone does...just curious. -
Nevermind. thought this was in the flatbed forum
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Some weeks I'm driver A and others I'm driver B. I'm not going to drive faster and increase my costs if there isn't a good reason to do so.bzinger, magoo68, Starboyjim and 3 others Thank this. -
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There's more too fuel usage then just speed.
Alot of people assume 'slower means less fuel used'. But what about the tranny?
If your near the upper rpm limit for a gear at a slower speed, you could easily be using more fuel per mile then running at the lower rpm for a higher gear and going a bit faster down the road.
ie (i don't drive a semi yet, so based on my pickup truck)
1200 rpm in 5th gear @ 55mph may use less fuel then 1900rpm in 4th gear @ 45mph
Every vehicle has a different sweat spot for optimal fuel usage, just a matter of finding it.skinnyb01, greatbargins10, truckerlife74 and 2 others Thank this. -
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