(1)Mae DCGTh 1990 wedi ei diwygio fel a ganlyn.
(2)Yn adran 257 (llwybrau troed, llwybrau ceffylau a chilffyrdd cyfyngedig yr effeithir arnynt gan ddatblygiad arall: gorchmynion gan awdurdodau eraill), yn is-adran (1A), hepgorer “in England”.
(3)Yn adran 259 (cadarnhau gorchmynion)—
(a)ym mhob un o is-adrannau (1), (1A) a (2), yn lle “Secretary of State” rhodder “appropriate national authority”;
(b)ar ôl is-adran (4) mewnosoder—
“(5)The appropriate national authority, for the purposes of this section, is—
(a)in relation to England, the Secretary of State;
(b)in relation to Wales, the Welsh Ministers.”