I hope you've finished the school and can read
if you can think on your own, even better
the experiment with removing speed limits in Montana proved: accidents rate and property damage drastically went down
wake up pal, signs are not about your safety, it is about your money
You might want to look at the Montana thing again, not just in one year but over a span of years.
Speed limits were repealed in Dec 1995 and were not reinstated until the end of 1999. That's 4 years of no posted speed limit.
Prior to those 4 years, Montana together with most other US states was enjoying a steadily declining per vehicle mile travelled (VMT) fatality rate. When speed limits were tossed out in Montana, that rate started climbing again, while the rest of the US continued to decline. See PDF page 28 at
http://www.mdt.mt.gov/publications/docs/brochures/safety/current_chsp.pdf , specifically "Chart III-1 Fatality Rate Montana versus US" for the 38-year trend lines for Montana and the rest of the US. The spike in Montana's trend line coinciding with the removal of the speed limit is fairly obvious.
There are also tables on the two pages before the chart mentioned above. From Tables III-1 and III-2, during the time of no speed limits the average number of Montana fatalities (2nd column) and injuries (3rd column) per 100 million VMT were as follows:
Code:
1996 2.10 112
1997 2.84 115
1998 2.50 106
1999 2.25 107
Avg 2.4225 110
Speed limits were reimposed for year 2000. The fatalities per 100 VMT for year 2000 was 2.4 which was slightly more than the immediately preceding year, but less than the average for the previous 4 years with no speed limits.
Looking at the next 4 years with newly-imposed speed limits, the average for fatalities dropped slightly (around 4%) , and the average for injuries dropped significantly (about 19%).
Code:
2001 2.30 90
2002 2.57 96
2003 2.40 88
2004 2.04 83
Avg 2.3275 89.25
Unlike your claim, apparently those signs were in fact about safety.
With respect to Ontario's signs and speed limits, while you can whine about how unreasonably low they are, they are in fact at or reasonable close to the average for the north-east part of the North American continent. Ontario also has the best per km driven traffic safety record in all of North America.