Ar hyn o bryd, ni chaniateir cynnal rasys moduron na threialon cyflymder ar briffyrdd cyhoeddus y DU oni bai bod yna Ddeddf Seneddol benodol ar gyfer hynny.  Mae Llywodraeth y DU yn ceisio diwygio adran 12 o Ddeddf Traffig Ffyrdd 1988 i godi’r gwaharddiad ar rasio moduron ar ffyrdd cyhoeddus a diwygio Adran 16a o Ddeddf Rheoleiddio Traffig Ffyrdd 1984, er mwyn codi’r gwaharddiad ar gau ffyrdd ar gyfer rasys moduron neu dreialon cyflymder.
At present motor races and trials of speed are not permitted on public highways in the UK, except by a specific Act of Parliament. The UK Government is seeking to amend s.12 of the Road Traffic Act 1988 to remove the ban on motor races on the public roads and to amend Section 16Aof the Road Traffic Regulation Act 1984, to remove the ban on closing roads for motor races or trials of speed.