English: Thank you, Llywydd. I am very grateful for everyone's contributions to this debate today, and I'm pleased to note that there is one important fact that we're all in agreement on and that is, of course, that doing nothing cannot be an option. There have been many, many valuable contributions during the course of this debate, and a number of Members have offered up some creative ideas that I will ensure are considered by the commission. This is a decision, not about going back to square one, Llywydd, it's about a rapid piece of work by an expert commission that will bring forward practical proposals to resolve some of the issues that are faced by the residents of Newport in 2019 and 2020, not many years from now when a road might eventually have been constructed and opened for traffic. I can assure Members that we are grasping the can right now and we will crush it far earlier than the black route would've dealt with it. I can also agree with Members, as Lynne Neagle has just said, that this is a problem that affects an entire region. Of course, it is felt most intensely in Newport, but all Members, regardless of the constituencies or the regions that they represent, should acknowledge that this is a matter of national significance and, therefore, they should not seek to play off different parts of Wales against one another. On that, I am in full agreement. I'd like to turn to a number of points that were raised. First of all, the question of the BCR and the black route. Yes, the benefit-cost ratio of the black route was favourable, especially in relation to the much derided blue route. However, the cost element was judged to be just too high, especially against a backdrop of austerity and the lack of a CSR, and, of course, the need to deliver vitally important social infrastructure, including hospitals, schools and houses that could have been sacrificed had the black route gone ahead. On the issue of the 50 mph speed limits along not just the M4 but other trunk roads in Wales, of course, this is to reduce the poison that is being emitted and is being inhaled by human beings. This is a measure that is proven to work. Nitrogen dioxide levels must be reduced -
Welsh: Diolch, Llywydd. Rwy'n ddiolchgar iawn am gyfraniadau pawb i'r ddadl hon heddiw, ac rwy'n falch o nodi bod un ffaith bwysig yr ydym i gyd yn gytûn yn ei chylch, sef, wrth gwrs, na all gwneud dim fod yn ddewis. Cafwyd llawer o gyfraniadau gwerthfawr yn ystod y ddadl hon, ac mae nifer o Aelodau wedi cynnig rhai syniadau creadigol y byddaf yn sicrhau eu bod yn cael eu hystyried gan y comisiwn. Penderfyniad yw hwn, nid ynghylch mynd yn ôl i'r cychwyn, Llywydd, mae'n ymwneud â darn o waith cyflym gan gomisiwn arbenigol a fydd yn cyflwyno cynigion ymarferol i ddatrys rhai o'r problemau sy'n wynebu trigolion Casnewydd yn 2019 a 2020, ychydig o flynyddoedd cyn y gallai ffordd fod wedi'i hadeiladu a'i hagor ar gyfer traffig yn y pen draw. Gallaf sicrhau'r Aelodau ein bod yn deall y broblem nawr ac y byddwn yn mynd i'r afael â hi yn llawer cynharach nag y byddai'r llwybr du wedi'i wneud. Gallaf hefyd gytuno â'r Aelodau, fel y mae Lynne Neagle newydd ddweud, fod hon yn broblem sy'n effeithio ar ranbarth cyfan. Wrth gwrs, caiff ei theimlo ddwysaf yng Nghasnewydd, ond dylai'r holl Aelodau, beth bynnag fo'r etholaethau neu'r rhanbarthau y maen nhw'n eu cynrychioli, gydnabod bod hwn yn fater o arwyddocâd cenedlaethol ac, felly, ni ddylent geisio gosod rhannau gwahanol o Gymru yn erbyn ei gilydd. O ran hynny, rwy'n cytuno'n llwyr. Hoffwn droi at sawl sylw a wnaed. Yn gyntaf oll, cwestiwn y gymhareb cost a budd a'r llwybr du. Oedd, roedd cymhareb cost a budd y llwybr du yn ffafriol, yn enwedig mewn cysylltiad â'r llwybr glas sydd wedi'i feirniadu'n hallt. Fodd bynnag, barnwyd bod yr elfen gost yn rhy uchel, yn enwedig mewn cefndir o gyni a diffyg adolygiad cynhwysfawr o wariant, ac, wrth gwrs, yr angen i ddarparu seilwaith cymdeithasol hanfodol bwysig, gan gynnwys ysbytai, ysgolion a thai y gellid bod wedi'u haberthu pe bai'r llwybr du wedi mynd yn ei flaen. O ran y cyfyngiadau cyflymder 50 mya nid dim ond ar yr M4 ond ar gefnffyrdd eraill yng Nghymru, wrth gwrs, mae hyn i leihau'r gwenwyn sy'n cael ei ollwng ac sy'n cael ei anadlu gan fodau dynol. Mae hwn yn fesur y profwyd ei fod yn gweithio. Rhaid lleihau lefelau nitrogen deuocsid -