Transportation contributes 29% of annual greenhouse gas emissions in the United States, with light duty vehicles, such as those used by commuters, contributing 59% of transportation related emissions. There is significant potential to empower commuters to consider the environmental impact of their mode choice when selecting among different options.
In the U.S. and throughout the world, engineers and planners recognize the need for streets to support safe mobility for different travel modes and types of users. Complete streets policies capture this aim of inclusivity by emphasizing design for older and younger travelers as well as people with disabilities. Issues of gender, families, and caregiving are implicit in this idea of a complete street. On average, women have more household responsibility for accompanying younger, older, and less mobile travelers.