{"id":4520,"date":"2021-11-30T17:23:32","date_gmt":"2021-11-30T17:23:32","guid":{"rendered":"https:\/\/cogitamus.co.uk\/uncategorized-cy\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2"},"modified":"2021-11-30T17:23:33","modified_gmt":"2021-11-30T17:23:33","slug":"efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2","status":"publish","type":"post","link":"https:\/\/cogitamus.co.uk\/cy\/chris-stokes-cy\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2","title":{"rendered":"Efallai mai dyma&#8217;r amser i Ogledd Cymru a Chaer ymuno \u00e2 rhwydwaith HS2?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Mae&#8217;n ymddangos bod cyhoeddi&#8217;r Cynllun Rheilffyrdd Integredig ar gyfer y Gogledd a Chanolbarth Lloegr, a drefnwyd yn wreiddiol ar gyfer dechrau&#8217;r flwyddyn hon, bellach ar fin digwydd. Fis yn \u00f4l, rhagwelwyd y byddai&#8217;n cael ei gyhoeddi ar yr un pryd \u00e2&#8217;r Adolygiad Cynhwysfawr o Wariant ar 27<sup>fed<\/sup> Ym mis Hydref, yna symudodd y dyddiad disgwyliedig yn fyr ymlaen, ond mae bellach wedi llithro&#8217;n \u00f4l i ganol mis Tachwedd, gan son bod Boris Johnson a Rishi Sunak yn dadlau am y cwmpas, gyda&#8217;r Prif Weinidog am gael mwy o uchelgais, ac felly gwariant uwch. Siawns na fydd popeth yn cael ei ddatgelu o&#8217;r diwedd yn ystod yr wythnosau nesaf?<\/p>\n\n<p class=\"wp-block-paragraph\">O ran Northern Powerhouse, y dyfalu gorau yw y bydd trydaneiddio yn awr drwy&#8217;r prif lwybr TrawsPennine drwy Huddersfield, er bod llawer o wyriad yn y manylion, er enghraifft a fydd y llwybr yn cael ei glirio ar gyfer cynwysyddion 9&#8242; 6&#8243;, ac a fydd digon o gapasiti i gludo nwyddau i ganiat\u00e1u tramwy cyflymach rhwng y Gogledd Orllewin a Humberside a Teesside \u2013 o ystyried y pellteroedd byr dan sylw,  bydd defnyddio adnoddau&#8217;n uchel yn hanfodol er mwyn i gludo nwyddau ar y rheilffyrdd cyfryngol fod yn gystadleuol ar y coridor hwn, gan alluogi newid moddol critigol cenhadaeth fel rhan o gyflawni sero net. Mae cwmpas, lefel yr ymrwymiad a&#8217;r amserlenni ar gyfer llinell cyflymder uchel Lerpwl \u2013 Manceinion \u2013 Leeds hefyd ymhell o fod yn glir.<\/p>\n\n<p class=\"wp-block-paragraph\">Mae&#8217;n ymddangos yn glir y bydd cangen Orllewinol HS2 Cam 2 yn cael ei hadeiladu&#8217;n llawn, er nad oes Bil Seneddol eto ar gyfer adran Crewe \u2013 Manceinion, felly mae amserlenni&#8217;n debygol o lithro ymhellach. Fodd bynnag, mae cangen y Dwyrain yn debygol o gael ei chicio i&#8217;r glaswellt hir \u2013 mae Prif Weithredwr HS2 eisoes wedi cyfeirio at hyn fel &#8220;Cam 3&#8221; y prosiect.<\/p>\n\n<p class=\"wp-block-paragraph\">Un o&#8217;r materion nad ymdriniwyd \u00e2 hwy eto yw effaith gollwng braich y Dwyrain ar ddefnyddio&#8217;r adran graidd rhwng Euston a Chanolbarth Lloegr. Er bod y deunaw tr\u00ean yr awr a addawyd ar gyfer yr adran hon bob amser wedi edrych yn optimistaidd, mae angen defnyddio&#8217;r seilwaith yn ddwys i wneud synnwyr economaidd. Fodd bynnag, heb fraich y Dwyrain, dim ond un ar ddeg o drenau yr awr fyddai, ac mae hyd yn oed hyn yn tybio y byddai Manceinion a Birmingham yn cefnogi tri thr\u00ean enfawr, 400 metr bob awr \u2013 gall llawer newid dros y deng mlynedd nesaf, ond gan dybio bod y lefel hon o alw yn edrych yn eithaf dewr ar \u00f4l y pandemig.<\/p>\n\n<p class=\"wp-block-paragraph\">Ar ryw adeg, yn ddelfrydol yn gynt yn hytrach nag yn hwyrach, mae angen i&#8217;r Adran Drafnidiaeth roi ystyriaeth ddifrifol i sut i ddefnyddio&#8217;r capasiti sb\u00e2r. Un opsiwn amlwg yw cysylltu HS2 \u00e2 llinell bresennol Birmingham \u2013 Derby, gwella cyflymderau llinell rhwng y gyffordd a Sheffield, er enghraifft drwy wella&#8217;r aliniad drwy Burton on Trent, a gweithredu gwasanaeth bob hanner awr rhwng Euston, Derby a Sheffield, gydag arbediad amser teithio o 25 \u2013 30 munud. Mae&#8217;n debyg mai&#8217;r lle gorau ar gyfer y gyffordd fyddai i&#8217;r dwyrain o Lichfield, gan gysylltu ag adran bresennol Cyffordd Lichfield \u2013 Cyffordd Wichnor. Er nad oes pwerau seneddol ar hyn o bryd ar gyfer cysylltiad o&#8217;i fath, mae&#8217;n mynd ar draws caeau gwyrdd, felly gallai fod yn gymharol anymwybodol.<\/p>\n\n<p class=\"wp-block-paragraph\">Byddai cynnig o&#8217;r fath, wrth gwrs, yn wleidyddol sensitif. Byddai&#8217;n cael ei weld, yn briodol, mae&#8217;n debyg, fel cau&#8217;r gwaith o adeiladu&#8217;r fraich ddwyreiniol lawn yn effeithiol, ac ni fyddai&#8217;n gwasanaethu Nottingham na&#8217;r Ganolfan Dwyrain Canolbarth Lloegr arfaethedig yn Toton. Ni fyddai ychwaith yn gwneud dim i Leeds, er bod yr arbedion amser ar gyfer HS2 o&#8217;i gymharu \u00e2 gwelliannau cynyddrannol pellach ar gyfer Prif Reilffordd East Coast, er enghraifft cyflawni&#8217;r cyflymder llinell 140 mya a ragwelir ers amser, yn is nag yn y gorllewin. Felly gellid ei ystyried yn wleidyddol wenwynig \u2013 enghraifft o&#8217;r gorau yw gelyn y da.<\/p>\n\n<p class=\"wp-block-paragraph\">Hyd yn oed gyda dau dr\u00ean yr awr i Sheffield, byddai HS2 yn dal i gael hyd at dri ar ddeg o drenau yr awr, felly mae mwy i chwarae drosto, ond dim gormod o gyrchfannau amlwg. Fodd bynnag, roedd Caer a Gogledd Cymru bob amser yn mynd i gael bargen amrwd gan HS2, gyda gwasanaethau cyflym cyn y pandemig yn cael eu disodli gan drenau arafach yn gwneud arosfannau mwy canolraddol, neu gyfnewidfa yn Crewe. Mae&#8217;r gwasanaeth eisoes wedi cael ei daro&#8217;n arbennig o galed gan ostyngiadau o ganlyniad i&#8217;r pandemig, gyda dim ond dau drwy drenau&#8217;r dydd, a dim arwydd eto o adfer y gwasanaeth bob awr blaenorol i Gaer, gyda phum tr\u00ean yn mynd drwodd i Gaergybi. Mae&#8217;r llwybr hefyd yn bwysig o ran gwleidyddiaeth yr Undeb, ac mae ymgyrch hirsefydlog dros drydaneiddio. Efallai mai dyma&#8217;r amser? Cafodd llwybr cyfatebol yn Llydaw, o Rennes i Quimper, ei drydaneiddio flynyddoedd lawer yn \u00f4l, ac mae ganddo wasanaethau TGV rheolaidd i Baris.<\/p>\n\n<p class=\"wp-block-paragraph\">Gallai llwybr Caer \u2013 Caergybi hefyd fod yn brosiect arddangos diddorol ar gyfer cyflwyno newid moddol. Mae&#8217;r llwybr o bosibl yn eithaf cyflym, gyda chyflymder llinell 75\/90 mya, a gall gwelliannau pellach fod yn gymharol rad \u2013 y llwybr a ddefnyddir i weld trenau cychod Cyflym Gwyddelig nes i gwmn\u00efau awyrennau cost isel ladd y busnes. Fodd bynnag, nid yw amlder yn uchel, gyda dau dr\u00ean yr awr fel arfer o Gaer cyn belled \u00e2 Chyffordd Llandudno, ac un y tu hwnt i Fangor a Chaergybi. Mae&#8217;r llwybr i raddau helaeth yn cyd-fynd \u00e2&#8217;r A55 Expressway, ffordd ddeuol bron drwyddi draw, ac wedi gwahanu&#8217;n llawn i&#8217;r Dwyrain o Gonwy.<\/p>\n\n<p class=\"wp-block-paragraph\">Mae&#8217;r trenau wedi&#8217;u llwytho&#8217;n weddol dda, ond dim ond dwy neu dair uned gar ydynt yn bennaf, ac mae&#8217;r gwrthgyferbyniad \u00e2&#8217;r traffig ar yr A55 yn eithafol; mae&#8217;n debyg bod cyfran modd y rheilffordd ar y coridor yn llai na 5%. Ond mae Llywodraeth Cymru, mentraf ddweud hynny, yn cymryd newid yn yr hinsawdd yn fwy difrifol nag yn Lloegr, felly mae wedi troi ei hwyneb yn erbyn adeiladu ffyrdd newydd, ac mae ganddo ddyheadau i ddatblygu ei rhwydwaith rheilffyrdd yn gynhwysfawr. Er bod rhai o&#8217;r syniadau&#8217;n edrych braidd yn wirion \u2013 er enghraifft, mae gwasanaeth bob hanner awr o Landudno i Drawsfynydd (poblogaeth 973) \u2013 amseroedd teithio cyflymach a gwell amleddau ar hyd arfordir Gogledd Cymru yn ddyhead synhwyrol.<\/p>\n\n<p class=\"wp-block-paragraph\">Fel y Cynllun Rheilffyrdd Integredig, mae&#8217;n debyg bod Adolygiad Cysylltedd yr Undeb yn aros ar silff rywle yn Whitehall nes bod y s\u00ear wedi&#8217;u halinio er mwyn iddo gael ei ryddhau. Yn y cyd-destun hwn, gallai gwelliannau i&#8217;r llwybr allweddol yng Ngogledd Cymru fod yn fuddugoliaeth gymharol gyflym.<\/p>\n\n<p class=\"wp-block-paragraph\"><a href=\"mailto:chrisjstokes@btopenworld.com\">chrisjstokes@btopenworld.com<\/a> <\/p>\n\n<p class=\"wp-block-paragraph\">Credyd llun: Paul Bigland.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mae&#8217;n ymddangos bod cyhoeddi&#8217;r Cynllun Rheilffyrdd Integredig ar gyfer y Gogledd a Chanolbarth Lloegr, a drefnwyd yn wreiddiol ar gyfer dechrau&#8217;r flwyddyn hon, bellach ar fin digwydd. Fis yn \u00f4l, rhagwelwyd y byddai&#8217;n cael ei gyhoeddi ar yr un pryd \u00e2&#8217;r Adolygiad Cynhwysfawr o Wariant ar 27fed Ym mis Hydref, yna symudodd y dyddiad disgwyliedig [&hellip;]<\/p>\n","protected":false},"author":32,"featured_media":4494,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_post_was_ever_published":false},"categories":[89],"tags":[],"class_list":["post-4520","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chris-stokes-cy"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Efallai mai dyma&#039;r amser i Ogledd Cymru a Chaer ymuno \u00e2 rhwydwaith HS2? - Cogitamus<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/cogitamus.co.uk\/cy\/chris-stokes-cy\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2\" \/>\n<meta property=\"og:locale\" content=\"cy_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Efallai mai dyma&#039;r amser i Ogledd Cymru a Chaer ymuno \u00e2 rhwydwaith HS2? - Cogitamus\" \/>\n<meta property=\"og:description\" content=\"Mae&#8217;n ymddangos bod cyhoeddi&#8217;r Cynllun Rheilffyrdd Integredig ar gyfer y Gogledd a Chanolbarth Lloegr, a drefnwyd yn wreiddiol ar gyfer dechrau&#8217;r flwyddyn hon, bellach ar fin digwydd. Fis yn \u00f4l, rhagwelwyd y byddai&#8217;n cael ei gyhoeddi ar yr un pryd \u00e2&#8217;r Adolygiad Cynhwysfawr o Wariant ar 27fed Ym mis Hydref, yna symudodd y dyddiad disgwyliedig [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/cogitamus.co.uk\/cy\/chris-stokes-cy\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2\" \/>\n<meta property=\"og:site_name\" content=\"Cogitamus\" \/>\n<meta property=\"article:published_time\" content=\"2021-11-30T17:23:32+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2021-11-30T17:23:33+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cogitamus.co.uk\/wp-content\/uploads\/2021\/11\/DG352800.-Up-tunnel-South-portal.-HS2-Chiltern-tunnel-South-portal.-West-Hyde.-13.7.2021..jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"533\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Chris Stokes\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Chris Stokes\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/cogitamus.co.uk\\\/cy\\\/chris-stokes-cy\\\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/cogitamus.co.uk\\\/cy\\\/chris-stokes-cy\\\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2\"},\"author\":{\"name\":\"Chris Stokes\",\"@id\":\"https:\\\/\\\/cogitamus.co.uk\\\/cy#\\\/schema\\\/person\\\/f06e599e6e1dd73b9fb777e32a30e2f0\"},\"headline\":\"Efallai mai dyma&#8217;r amser i Ogledd Cymru a Chaer ymuno \u00e2 rhwydwaith HS2?\",\"datePublished\":\"2021-11-30T17:23:32+00:00\",\"dateModified\":\"2021-11-30T17:23:33+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/cogitamus.co.uk\\\/cy\\\/chris-stokes-cy\\\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2\"},\"wordCount\":1139,\"image\":{\"@id\":\"https:\\\/\\\/cogitamus.co.uk\\\/cy\\\/chris-stokes-cy\\\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/i0.wp.com\\\/cogitamus.co.uk\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/DG352800.-Up-tunnel-South-portal.-HS2-Chiltern-tunnel-South-portal.-West-Hyde.-13.7.2021..jpg?fit=800%2C533&ssl=1\",\"articleSection\":[\"Chris Stokes\"],\"inLanguage\":\"cy-GB\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/cogitamus.co.uk\\\/cy\\\/chris-stokes-cy\\\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2\",\"url\":\"https:\\\/\\\/cogitamus.co.uk\\\/cy\\\/chris-stokes-cy\\\/efallai-mai-dymar-amser-i-ogledd-cymru-a-chaer-ymuno-a-rhwydwaith-hs2-2\",\"name\":\"Efallai mai dyma'r amser i Ogledd Cymru a Chaer ymuno \u00e2 rhwydwaith HS2? 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