Teitl clawr = Cover title.
Profion tawelu traffig : arolwg o gynlluniau tawleu traffig ar rwydwaith cefnffyrdd a phriffyrdd Cymru : Rhagfyr 1999 = Traffic calming trials : a review of traffic calming schemes on the trunk and pr. ISBN 075042415X. Published by Cynulliad Cenedlaethol Cymru in 1999. Publication and catalogue information, links to buy online and reader comments.