There was a reduction in the sample size in 2019-20 for responses to active travel questions around cycling, which means no comparisons should be made to previous years.
Roedd gostyngiad ym maint y sampl yn 2019-20 ar gyfer atebion i gwestiynau teithio llesol am feicio, sy’n golygu na ddylid cymharu gyda blynyddoedd blaenorol.