Research Article
Sustainable Highway Design: Disentangling the Effects of Geometric-Related and Traffic-Related Factors on Urban Highway Traffic Emissions
Table 2
The influencing factors of traffic emissions.
| Category | Type of factors |
| Vehicle characteristics | Vehicle type, year of manufacture, mileage, fuel supply system, emission control systems | Fuel parameters | Fuel type, oxygen content, sulfur content, volatility, density | Operating conditions | Startup mode, speed, acceleration, excess air ratio, load, road geometry, type of signal control, driving behavior | Operating environment | Ambient temperature, relative humidity |
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