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Distance of residential land use from urban transportation network is modeled based on
determining factors of Carbon Monoxide (CO) emission from vehicles movement. This emission is
useful for modeling suitable locations of residential land use in urban areas. The determination of
factors is based on their analyzing individual role in CO emission. Relevant factors such as plume rise
of CO, average atmospheric temperature and pressure, stack exiting velocity, estimated stack diameter,
average wind speed and traffic volume are determined based on historical data (Highway Planning Unit,
2004) and standard definition of road types. Mathematical analysis methods, used to determine
quantitative role of factors in the model, include programming by software of Excel and power function
analyzing.
The air quality expected with respect to CO distribution is modeled using the basic theory of Primary
Standard of CO Pollutant in 8 hours averaging time (WHO, 2000), which shows that the threshold of air
pollution for human health in Malaysia is considered equal to 10 mg/m
3
.