This page explains how Ronald Lusk (USATT# 967)'s rating went from 1781 to 1786 at the Rocky Mountain Train Wreck Ope held on - 16 Jul 2006. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.