Network Analysis
The network analysis provides an overview of the entire network with the application of the
heavy vehicles specified by the user. The same set of heavy vehicles is applied to all roads in the
network. Due to the summary nature of the analysis, detailed information on specific roads
cannot be provided in the results pages. The network report provides total impact cost
information, assuming that all vehicles are applied to all streets. As described in the previous
chapter, the total cost of consumed life, over the entire network is reported, as well as the total
cost of additional asphalt to upgrade the network to accommodate the additional heavy vehicles.
The two methods of computing the cost of impacts will not provide exactly the same results,
since they are computing completely different impacts. They are almost always close to each
other however. For example, in the example in Figures 20 and 21 shows that the percent life
consumed method predicted about $994,000 in impact costs, and the additional asphalt thickness
design method predicted about $1,227,000 in costs. Considering that these two methods arrived
at these values in completely different ways, it is a very close comparison.