There are indications that many trucks now have front axle loads approaching the maximum allowable for single axles which increases the potential for pavement damage.
This report is intended to be a State-Of-The-Art approach to answer several pertinent questions from a theoretical study based on hypothetical pavements and loads, but based on reasonable material characteristics and pavement behavior from previous research. The results are a series of relationships based on pavement life which can be used to determine any number of "equivalencies." These equivalencies can be used to compare the destructive effects of various sizes of single and dual tires, axle loads, pavement thicknesses, speed and temperatures.
The general nature of this report provides a wide range of conditions for comparison on a relative basis.