RTD Zero Fare for Better Air positively impacted greenhouse gas emissions, air quality in July and August

The Regional Transportation District’s (RTD) two-month Zero Fare for Better Air (ZFBA) initiative in 2023 led to an estimated reduction of more than 9 million vehicle miles traveled during peak ozone months of July and August. Additionally, estimates show more than 6 million pounds of greenhouse gases were eliminated when individuals opted to use public transit instead of a single occupancy vehicle.

To assess the environmental impact of the 2023 ZFBA initiative, RTD partnered with the Regional Air Quality Council (RAQC), the lead air quality planning agency for the nine-county Denver Metro/North Front Range Ozone Nonattainment Area. RAQC’s analysis utilized the Greenhouse Gases, Regulated Emissions and Energy use in Transportation (GREET) model to estimate the initiative’s overall impact on the region’s air quality.

According to RAQC, the Zero Fare for Better Air initiative helped reduce both ozone precursors, volatile organic compounds (VOCs) and nitrogen oxides (NOx), which in the presence of heat and sunlight, combine to form invisible but harmful ground-level ozone.

“When public transit is easy to use, people use it more,” said Mike Silverstein, RAQC Executive Director. “Increased public transit use also reduces the top two sources of ground-level ozone precursors in the Front Range: emissions from cars and light trucks, and fuel production by the oil and gas industry to fill those tanks. RTD’s Zero Fare for Better Air initiative helps reduce both our fossil fuel use and the demand for its production, making a positive impact on our local air quality during peak ozone season.”

Read the full release: RTD Zero Fare for Better Air positively impacted greenhouse gas emissions, air quality in July and August