Speed limits and their effect on air pollution in Mexico City: A quasi-experimental study
Jose Luis Texcalac-Sangrador e outros, 2024 · The Science of the Total Environment
Lowering speed limits and increasing automated enforcement in Mexico City reduced the weekly PM2.5 concentration trend by 0.05 μg/m3, flattening a previously upward trajectory.
Estimativa · PM2.5 concentration trend change, μg/m3 per week
-0,0500 [-0,0700; -0,0300]
μg/m3 per week
p: <0.001
- Desenho
- Série temporal interrompida. Interrupted time series using generalized linear mixed models adjusting for weather and vehicle registrations
- População
- 16 air quality monitoring stations across Mexico City, January 2014 to December 2018
- Amostra
- 17.515 · Daily monitor-level non-peak concentration averages (6,646 pre-policy and 10,869 post-policy observations)
Onde está o número
Table 2, row 'Slope difference (β3)⸸' under 'PM2.5'
Slope difference (β3)⸸ | −0.05 (−0.07,-0.03) | <0.001
Contexto
What changed: Lower speed limits on arterials and freeways, increased speeding fines, and 25 new automated speed cameras took effect in December 2015. Comparison: Pre-policy trend (January 2014 to December 2015) versus post-policy trend (December 2015 to December 2018) via interrupted time series. Limits: Lacks an unexposed control city; air monitors reflect broad ambient areas rather than immediate roadside exposures.
Caminho no grafo
- FamíliaRegras e regulação
- TipoPadrões e proibições
- MecanismoRedução de congestionamento e emissões veiculares
- ResultadoPoluição atmosférica local
- EixoPoluição do ar
MAGI só cita evidência deste instrumento
Lugares do estudo
- Mexico City · Município · MX
- Licença
- CC-BY
- Revisão
- Extraído por máquina, não revisadoExtraído por: gemini-3.8-flash, 2026-10-23