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Old 06-03-2010, 10:12 PM   #29
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58-63 mph freeway or not, but feel unsafe at these speeds on the freeway as trucks and others seem to be 75-80. So I avoid freeways as much as possible, and we enjoy the travel experience much more.

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Old 06-03-2010, 11:53 PM   #30
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Generally on interstates and similar highways, we go 65. It's the speed that feels right to us. We more or less keep up with right lane traffic. Going slowly can disrupt traffic flow and that creates certain danger in the traffic dynamic. Gas mileage is definitely lower than at 55 or 60, but on our usual long trips, over 10 days we probably cover 300-400 more miles. The added fuel cost is partly compensated by getting where we want to be.

On long, steep grades gas consumption skyrockets at 65 and that's when to drive at 55. On 6 or 8 lane highways in urban areas, we stay in the lane to the left of the right lane—because of people entering and leaving the highway, it is the most dangerous lane. It's safer in the next lane and you'll notice a lot of large trucks stay there too.

Every one of these approaches requires some flexibility according to how traffic is moving.

For example, when a cop is driving down the highway at the speed limit, there will be a bunch of drivers behind him clumped up. People are speeding down the left lane until they see him. The traffic dynamic is messed up, cars are too close together and all are hoping he will get off the highway. When he does, many are jockeying to get ahead as soon as he can't see him and creating more dangers. A trailer doesn't disrupt traffic quite that way, but driving too slow for the situation can create problems.

California is not the only state with a 55 limit for trailers—I think Illinois does too. I haven't noticed many people driving at 55. Most seem to be going 65.

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Old 06-06-2010, 06:22 AM   #31
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California is not the only state with a 55 limit for trailers—I think Illinois does too. I haven't noticed many people driving at 55. Most seem to be going 65.
I believe Illinois lifted the 55 mph limit for trucks and trailers at the beginning of 2010, as Ohio did a couple of years ago.

55 across Illinois was a real nuisance when you're actually trying to get somewhere. My wife was astonished when I told her that was the limit. She couldn't believe it was so low.
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Old 06-06-2010, 08:59 AM   #32
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Where the speed limit is 75 - usually 70 - 75 (with 50 mph gusts) just slowing from 75 to 70 was enough to bring the trailer back to "is it even back there mode".

In Cali they want you to go 55 - that is too slow as the other cars go blasting around you - so I keep it at the speed limit (65-70).

So - I keep to the posted speed limit on the roads or five below.
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Old 06-06-2010, 09:01 AM   #33
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Oh yea - doing 70 on the straights I get 14.5 mpg - speeding up to 75 drops me to 13.0 mpg....
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Old 06-07-2010, 06:46 AM   #34
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Our trip went great. Kept our speed arround 60-63 depending on traffic/conditions, occaisionally seeing 65 or more. Any faster can get hairy in traffic. People mostly left us alone, but we did get a "That's cool!" from a motorcycle and a thumbs up from a 911. The shocker is that we traveled 228 miles and got 9.9 mpg. Dang! I need to get the dash air working and tune up the generator so we can be more comfortable.
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Old 06-07-2010, 06:57 AM   #35
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Old 06-07-2010, 08:30 AM   #36
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Well I see that most are in agreement with 60-65 mph seems to be where its at and I agree. I am not an old salt at this by any means but one of the reasons for that concensus I think, is that you are under less stress and anxioty not pushing the proverbial button. My gas mileage towing is 11 mpg at those speeds on our trip back to CT from FL, on the inland route trought the smokeys.

Just a tip if you are ever in a place called Society Hill, NC, watch out they don't play fair, the town makes their income on people going 36 in a 35 mph, EXPENSIVE! They will never see me again.
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Old 06-07-2010, 10:42 AM   #37
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Just a tip if you are ever in a place called Society Hill, NC, watch out they don't play fair, the town makes their income on people going 36 in a 35 mph, EXPENSIVE! They will never see me again.
The same is true for many small towns in Indian reservations; every year traveling out to Burning Man from Fernley, NV. we see people getting tickets. I solve the inadvertent speeding problem by just doing a few under the limit in town.

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Old 06-07-2010, 11:21 AM   #38
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Of course there are legal speed limits which differ from state to state for those of us who always abide by those kinds of rules.
Which is all I would ever admit to.

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Old 06-19-2010, 08:15 PM   #39
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Fuel consumtion & speed

I read somewhere years ago that the fuel burning curve changed dramatically @62 MPH due the the amount of energy it took to go
64 as compared to 60 to 62. There up it got worse. All the scientific formulas to displace the air we push and the energy spent to do it.
I try to keep our below 65 and get an honest 11 MPG while towing a toad or a car trailer loaded. (Ours is a diesel pusher)
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Old 06-20-2010, 06:26 AM   #40
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With cruise control engaged at 63mph, flat highway, no wind - my rig gets right a 10mpg. I keep it there because its easier to do the math for time/distance/fuel calculations...
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Old 03-25-2011, 04:48 PM   #41
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We find 63 on cruise control most comfortable.
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Old 03-26-2011, 08:31 AM   #42
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We find 63 on cruise control most co mfortable.
On checking our GPS with speedometer our 65 is actually 63.
Does the 05 have a tachometer?
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