Paper review: Impact of horizontal geometric design of two-lane rural roads on vehicle CO2 emissions
The original paper link is here. In this paper, the authors evaluate the impact of horizontal highway geometric design features on CO2 emissions with VT-Micro, a microscopic emission estimation model. The authors believe that too little research thus far has focused on the effects of horizontal alignment on GHG emissions, compared with the number of studies that evaluate the influence of vertical alignment. The authors study a database of more than 16,000 veh-km collected in 2008 on 11 two-lane rural road sections which were divided into 29 homogeneous road segments according to their Curvature Change Rate (CCR). To estimate CO2 emissions, instantaneous speed and acceleration are used as input variables for the VT-micro model. The paper provides geometric analysis, operational analysis, and combined analysis. As for geometric analysis, the study…
