Table 2.

Vehicle traffic data on Massachusetts Turnpike (42.337433, −71.288790). Data from days of Blue Hills collection dates. “Percent of vehicles traveling 112+ km/h” and “average volume per hour” used only data from 10:00 AM to 3:00 PM. Data gathered from MassDOT MS2 Transportation Data Management System (Location AET10).

Sampling events	Percent of vehicles traveling 112+ km/h	Average volume per hour
Pre-COVID-19	47.5	7628
COVID-19 with non-leafed trees	66.7	2909
COVID-19 with leafed trees	57.8	4675