A wnaiff y Gweinidog gadarnhau cost gweithredu'r camerâu cyflymder 50mya ar draws y pum lleoliad yng Nghymru?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 06/12/2022
The cost to implement the speed cameras to enforce the 50mph for air quality purposes across the five locations in Wales (M4 Newport, M4 Port Talbot, A470 Pontypridd, A483 Wrexham and A494 Deeside) was £3.34 million pounds.
We know enforcement of the speed limit is likely to be the quickest and most effective way to reduce NO2 levels. Welsh Government have published data showing the efficacy of the 50mph limits in reducing NO2 levels at https://gov.wales/sites/default/files/publications/2022-09/annual-data-on-no2-concentrations-for-the-motorway-and-trunk-road-2020-to-2021.pdf