E7.5 data frame has 26 rows and 6 columns.
This data frame contains the following columns:
a numeric vector, static weight of axle 1.
a numeric vector, weight in motion of axle 1.
a numeric vector, static weight of axles 2–3.
a numeric vector, weight in motion of axles 2–3.
a numeric vector, static weight of axles 4–5.
a numeric vector, weight in motion of axles 4–5.
Trucks can be weighted by two methods. In one, a truck needs to go into a
weighting station and each axle is weighted by conventional means. The
other is newer and a somewhat experimental method where a thin pad is placed
on the highway and axles are weighted as trucks pass over it. Former weight
are called static weights (
sw) while later are called weights in
Saleh Mumayiz, Urban Transportation Center, University of Illinois at Chicago, who compiled the data from a data set provided by the Illinois Department of Transportation.
1 2 3
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