3 ms·

There is no math behind it and its evidence is poor. Thats why: > The accuracy of the law of the fourth power is disputed among experts

• pmontra 3y ago
  A more extended quote: > When evaluating the series of tests, it was found that there is a connection between the thickness of the pavement, the number of load transfers and the axle load, and that these have a direct effect on the service life and condition of a road. The service life of the road is thereby reduced with approximately the fourth power of the axle load. > The accuracy of the law of the fourth power is disputed among experts, since the test results depend on many other factors, such as climatic conditions, in addition to the factors mentioned above.
  • raverbashing 3y ago
    Yes, saying it's only axis loading is wrong But the proportionality rule should be valid Even if the actual power would be 2 instead of 4 it does make sense to limit axis load
  • jabl 3y ago
    Even if we give it a bit of slack and make it a third-power-law for taxation purposes, it would still mean a large increase in tax for heavy vehicles. Or IOW, currently heavy vehicles are free-riding, with lighter vehicles providing much of the tax revenue to fix the damage the heavies are causing.