E7.5 {SenSrivastava} | R Documentation |
Data on Static Weights and Weight in Motion of Trucks
Description
The E7.5
data frame has 26 rows and 6 columns.
Usage
data(E7.5)
Format
This data frame contains the following columns:
- sw.1
-
a numeric vector, static weight of axle 1.
- wim.1
-
a numeric vector, weight in motion of axle 1.
- sw.23
-
a numeric vector, static weight of axles 2–3.
- wim.23
-
a numeric vector, weight in motion of axles 2–3.
- sw.45
-
a numeric vector, static weight of axles 4–5.
- wim.45
-
a numeric vector, weight in motion of axles 4–5.
Details
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
motion (wim
).
Source
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.
Examples
data(E7.5)
summary(E7.5)
plot(E7.5)