Fig. 5: 2050 U.S. mobility greenhouse gas (GHG) emissions under a baseline (left) or decarbonized (right) energy grid for three input variables, one of each type: behavior, technology, and policy.
From: Exploring decarbonization pathways for USA passenger and freight mobility
Within each input category, we show a commonly discussed lever for transportation decarbonization: a demand reduction in passenger trips (behavior); b fleetwide on-road vehicle fuel economies (technology); and c a light-duty (LD) zero-emissions vehicle (ZEV) sales mandate (policy). Variable means are marked with an “x,” medians with a horizontal line, and the deep decarbonization threshold by a horizontal dashed line. These results do not indicate the likelihood of outcomes.
