{ "uri": "https://www.contractsfinder.service.gov.uk/Published/Notice/releases/c72b3a73-f799-4e4e-a9be-322bee88c1ac.json", "publishedDate": "2025-06-26T11:51:02+01:00", "publisher": { "name": "Cabinet Office", "scheme": "GB-GOR", "uid": "D2", "uri": "https://www.gov.uk/government/organisations/cabinet-office" }, "version": "1.1", "extensions": [ "https://standard.open-contracting.org/profiles/eu/master/en/extension.json", "https://raw.githubusercontent.com/portaledcahn/ocds_tenderDatePublished_extension/master/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_budget_breakdown_extension/master/extension.json", "https://raw.githubusercontent.com/Crown-Commercial-Service/ocds_awards_datePublished_extension/main/extension.json", "https://raw.githubusercontent.com/Crown-Commercial-Service/ocds_partyDetails_vcse_extension/main/extension.json", "https://raw.githubusercontent.com/Crown-Commercial-Service/ocds_tender_suitability_extension/main/extension.json", "https://raw.githubusercontent.com/open-contracting-extensions/ocds_pagination_extension/master/extension.json" ], "license": "http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/", "publicationPolicy": "https://www.gov.uk/government/publications/open-contracting", "releases": [ { "ocid": "ocds-b5fd17-b4c136e0-b340-4d19-a00b-ee1b2e94737e", "id": "c72b3a73-f799-4e4e-a9be-322bee88c1ac-851538", "language": "en", "date": "2025-06-26T11:51:02+01:00", "tag": [ "award" ], "initiationType": "tender", "tender": { "id": "tender_495097/1494883", "title": "T0695 Diverging Diamond Interchanges - update to DMRB standard CD 122", "description": "National Highways (the Client) is seeking the provision of services to undertake research into Diverging Diamond Interchanges (DDI).\r\nSTAGE 1 SCOPE:\r\nOverall, the aims of this task are to:\r\n1.\tMeasure the safety performance of DDIs to clearly understand how or if they are safer than existing junction types;\r\n2.\tExamine potential risks and hazards such as Wrong Way Driving;\r\n3.\tReview international standards and determine relevance to UK; and \r\n4.\tReview the DMRB to understand how requirements and advice would need to change to encompass Diverging Diamond Interchanges. \r\n\r\nThe award of this work package is initially for Stage 1 only (see background). \r\n\r\nSubject to further funding, a STAGE 2 FEASIBILITY task would be undertaken in the next financial year:\r\n\r\n-\tIdentify a location where the layout can be retrofitted and modelled to existing infrastructure such as at an existing dumbbell roundabout at a grade separated junction and then examine scalability across the network;\r\n-\tInvestigate how any new risks such as Wrong Way Driving or failure of traffic signals can be reduced or removed;\r\n-\tMeasure the environmental and economic benefits such as land take reduction and carbon saving; and \r\n-\tProvide recommendations for requirements, advice and drawings to update the DMRB and update the standards CD 122 and CD 123. 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