API 4163-1972 A Study of Mandatory Engine Maintenance for Reducing Vehicle Exhaust Emissions Volume III. A Documentation Handbook for the Economic Effectiveness Model
"PURPOSE The primary purpose of the Economic Effectiveness Model is to serve as a research and design tool for assessing the various implications of a mandatory program of vehicle inspection/maintenance. As such@ it has been constructed with the capability to evaluate a wide range of possible procedure and design alternatives. The model is designed to both analyze the regional feasibility of vehicle inspection/maintenance as well as to specify an optimal system design. Input data for several regional areas covering the gamut of auto related air quality problems are incorporated into the model. In addition to these functions@ the model can also be used to analyze the sensitivity of system performance to various model assumptions and basic data inputs. Used in this way the model serves as a ""self regulating device"" for identifying areas requiring further analytical and empirical definition. The model by its very nature is policy oriented. That is@ it is best used for evaluating the attractiveness of alternative policies@ e.g.@ engine inspection or emission inspection@ which govern and control the operation of an inspection/maintenance system. Actually@ there exists a hierarchy of policy decision variables within the structure of the model. The determination of the optimal values for these variables is presently accomplished through the use of a para-optimization technique. The main function of the model@ in addition to analyzing policy variables@ is in simulating the behavior of the inspection/maintenance process over time. Here@ the economic-effectiveness of various strategies can be measured in terms of emission reductions and program costs at each time interval. A statistical analysis of these reductions can be undertaken as a further check on predicted model performance. The final step in this process is to utilize the unadjusted or statistically adjusted figure of merit for selecting the optimal model design for each candidate region."
API 4163-1972 history
1972API 4163-1972 A Study of Mandatory Engine Maintenance for Reducing Vehicle Exhaust Emissions Volume III. A Documentation Handbook for the Economic Effectiveness Model