Street sweepers aren’t
exactly the fastest rides on the road. Then again, why would they
need to be? You would want to stay for a longer period on one spot to
make sure it’s spotless.
As always, the
speed-accuracy trade-off comes to mind. Public utilities, just like
companies, run on time; the longer they take in doing their job, the
more impatient the public grows over certain inconveniences. However,
cleaners also want to make sure they did everything according to
plan. If the same problem occurs a second time, they know they did
something wrong.
For street sweepers,
compromise is the key. Experts say the optimal forward speed for
street cleaning with these sophisticated vehicles is at 5 mph, which
is as fast as running. This ensures balance between the time it takes
to clean the roads and the quality of work done. To be able to adapt
to various conditions, experts set the ideal speed range between 3
and 7 mph.
At such speeds, many say
it may take more than two weeks to clean an entire city or town.
Public utilities often weigh the cost of operating a street sweeper
with the time it takes them to clean the city or town. The average
cost per mile plays at around $100. This includes, but are not
limited to, the pay for the street sweeper operators and maintenance
of the unit.
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