Traffic: Effect of Swedish Speed Limits on Accidents
In MASS: Support Functions and Datasets for Venables and Ripley's MASS
Traffic R Documentation
Effect of Swedish Speed Limits on Accidents
Description
An experiment was performed in Sweden in 1961–2 to assess the
effect of a speed limit on the motorway accident rate. The
experiment was conducted on 92 days in each year, matched so that
day j in 1962 was comparable to day j in 1961. On some days
the speed limit was in effect and enforced, while on other days
there was no speed limit and cars tended to be driven faster.
The speed limit days tended to be in contiguous blocks.
Usage
Traffic
Format
This data frame contains the following columns:
year-
1961 or 1962.
day-
of year.
limit-
was there a speed limit?
y-
traffic accident count for that day.
Source
Svensson, A. (1981)
On the goodness-of-fit test for the multiplicative Poisson model.
Annals of Statistics, 9, 697–704.
References
Venables, W. N. and Ripley, B. D. (2002)
Modern Applied Statistics with S-PLUS. Fourth Edition. Springer.
MASS documentation built on June 22, 2024, 10:42 a.m.
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| Traffic | R Documentation |
Effect of Swedish Speed Limits on Accidents
Description
An experiment was performed in Sweden in 1961–2 to assess the
effect of a speed limit on the motorway accident rate. The
experiment was conducted on 92 days in each year, matched so that
day j in 1962 was comparable to day j in 1961. On some days
the speed limit was in effect and enforced, while on other days
there was no speed limit and cars tended to be driven faster.
The speed limit days tended to be in contiguous blocks.
Usage
Traffic
Format
This data frame contains the following columns:
year-
1961 or 1962.
day-
of year.
limit-
was there a speed limit?
y-
traffic accident count for that day.
Source
Svensson, A. (1981) On the goodness-of-fit test for the multiplicative Poisson model. Annals of Statistics, 9, 697–704.
References
Venables, W. N. and Ripley, B. D. (2002) Modern Applied Statistics with S-PLUS. Fourth Edition. Springer.
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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