Affiliation:
1. University of Auckland
2. University of Glasgow
3. University College Dublin
Abstract
This paper investigates how Glasgow’s low-emission zone (LEZ), introduced in 2023, affected traffic patterns and nitrogen dioxide (NO2) concentrations at two sites. Using Open APIs data from the pre-LEZ (Aug-Sep 2022) and post-LEZ (Aug-Sep 2023) periods, a Wilcoxon test revealed that on High Street, significant decreases in traffic flow were observed on core weekdays (W = 359, p < 0.001) and other weekdays (W = 122, p = 0.03), as were significant decreases in normalized NO2 levels across all day groups (p < 0.001). Hope Street also showed significant NO2 reductions across all day groups (p < 0.01), despite no significant change in traffic.
Publisher
Network Design Lab - Transport Findings
Reference13 articles.
1. Non-Exhaust Emissions from Road Traffic;Air Quality Expert Group,2019
2. NO2 hotspots: Are we measuring in the right places?;M. Beckwith;Atmospheric Environment: X,2019
3. openair—An R package for air quality data analysis;D. C. Carslaw;Environmental Modelling & Software,2012
4. A national-scale review of air pollutant concentrations measured in the U.S. near-road monitoring network during 2014 and 2015;J. L. DeWinter;Atmospheric Environment,2018
5. Wind Direction Quick Reference;Earth Observation Laboratory,2024