“…A forecast of transportation CO 2 emissions can help us understand the development trend and support the policy making of carbon emission reduction. Researchers have forecasted China's transportation CO 2 emissions across the country [12][13][14] for provinces such as Jiangsu [15,16], Hubei [17][18][19], Hebei [20], Shandon [21], Shaanxi [22], Qinghai [23], Jilin [24], and Hainan [25] and cities such as Beijing [26,27] and Tianjin [28] using the Kaya model [13], the STIRFDT(Stochastic Impacts by Regression on Population, Affluence, and Technology) model [1,17,18,23,[29][30][31], the LEAP (Long-range Energy Alternatives Planning System) method [32], the linear regression method [14], the gray model [20,22,33,34], the LMDI (Logarithmic Mean Divisia Index) method [35,36], the machine-learning method [15,27,37], the system dynamics method [28,[38][39][40], and so on. These methods are often used in combination with a scenario analysis to make predictions [1,13,[16...…”