Task G5 - Coordination. Task H - National Concerns and Problem Solutions Current pavement technologies utilize the fourth power law developed for estimating load equivalence for design purposes. This law is not appropriate for the more complex truck axle configurations and suspensions in existence today, and it does not consider current pavement structures and materials. In addition, the fourth power law relates pavement wear from a user perspective rather than from an actual damage perspective. A more representative model can be developed to describe these relationships.
Federal regulations restrict truck size and weight on the interstate system.
State laws may permit much different regulations on the state and local systems. To provide some uniformity to these limits, the true effects of heavy vehicles, axle configurations, suspension types, tire types and tire inflation pressure on pavement performance will be investigated and a new method, which takes the most influential factors into consideration, will be developed. Task H1 - Mechanistic Pavement Design. Demonstrate application of data and models to the solution of pavement design problems. Task H1a - Pavement Performance.