Carbon dioxide emissions in a drive-through

Research into carbon dioxide emissions from an idling gas-powered engine in a drive-through shows that emissions variy depending on whether a vehicle is braking, idling, coasting or gently accelerating as it moves through the queue.

Figures represent emissions in grams per second of carbon dioxide during different stages of movement in a fast-food drive-through lane. Carbon dioxide is a greenhouse gas that is a contributor to global climate change.
Chart: Tim Sheehan / Central Valley Journalism CollaborativeSource: "An Evaluation of the Effects of Drive-Through Configurations on Air Quality at Fast Food Restaurants," by Keziah Hill, Fengxiang Qiao, et al,, 2016, Texas Southern University, in the Journal of Civil & Environmental Engineering