A wnaiff y Gweinidog ddarparu tystiolaeth bod gwrthdrawiad traffig ffyrdd ar 20mya yn llai niweidiol yn economaidd i'r GIG a'r gymdeithas yn gyffredinol o'i gymharu â gwrthdrawiad traffig ffyrdd cyfartalog ar 30mya?
Wedi'i ateb gan Y Dirprwy Weinidog Newid Hinsawdd | Wedi'i ateb ar 27/09/2023
A report was undertaken by Edinburgh Napier University which took the number of casualties at 30mph and then calculated the number of casualties that could be avoided by introducing 20mph, which was 40% of actual casualties.
The total savings for the reduced number of casualties between 30mph and 20mph was then given a monetary value based on 2018 costs and estimated to be £92m. Full details as to how this was derived can be found in Figure 2 of the Report.