Previous Welsh ed.: 1998.
Yn cynnwys mynegai = Includes index.
Darparwyd gan yr Asiantaeth Safonau Gyrru ar gyfer Adran yr Amgylchedd, Trafnidiaeth a'r Rhanbarthau = Provided by the Driving Standards Agency for the Department of the Environment, Transport and the Regions.
Is-deitl clawr: I gerddwyr, beicwyr, beicwyr modur a gyrwyr = For pedestrians, cyclists, motorcyclists and drivers.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
Rheolau'r ffordd fawr. ISBN 011552312X. Published by Stationery Office in 2001. Publication and catalogue information, links to buy online and reader comments.
