3-6 mpg
Four to eight miles per gallon, all factors dependent.
Many of the new large displacement (15L) are running 5 -6.5 mpg at 80K some of the smaller displacement (9L,11L)get up to 8.5mpg at 40-60K
110"
100 to 110 inches is typical for a dry van, refrigerated van, or curtainside van trailer which is 13'6 high.
5 seconds
A typical tractor trailer unit, with a total of five axles, can typically carry between 23 and 25 tons legally, dependent on the tare weight of the tractor and trailer. The legal interstate gross weight rating for such a setup is 80,000 lbs.
15 or more seconds
a dry van trailer usually is 53 long, 102 wide, 110 tall. there are also 48' trailers
Depends on the type and size of the rig, but a typical tractor weighs 15,000# and a 53' enclosed van trailer weighs about 13,000#, for a total of 28,000 lbs. Most US highways have an 80,000 pound weight limit, so the load capacity or maximum net weight of a typical tractor-trailer is 52,000 lbs.
92,000 is typical for interstate travel, but intrastate varies by state.
Most of the newer trucks average around 6 mpg. My 1984 International Cabover with a 300hp BC3 got 5.5 mpg and my 1985 Freightliner Cabover with a 3406 310hp caterpillar got closer to 6 mpg. My 1996 Peterbilt 377 got a lifetime average of 7.3 mpg with a S60 Detroit 500 hp.
For a typical, normal profile, North American dry or refrigerated van trailer, the floor space will be 53 feet in length, 96 inches in width, and 110 inches of interior height inside the trailer.