Project design brlefs TfL is responsble forp An objective should also be included that .A statement of the likely procurement method Before being introduced to the TLRN.new types relates to the impact of the project on future ide guida ctive of the maintenance needs to the desien te ethod of ortunities for str out in TfL's cedure for trialling hould be take in a Detais of the Mayor's strategies.policies and that apply Thi cts on the TLRN. be included in the brief.This infe nitiatives that are p help the des Reference Greater London Authority: hould be allowe for this in ings and will affect the choice of ed city.A guide to brief will result in better ely Astatement describing the deliverables. of archite cts and pletion in the late e the limits of th nly desigr vill limit the de The TfL should also vision can be assessments that are needed by TfL describe how any political c straint might of what ffect the desip outcome A statement requiring that the design team Contractors must preparea sitable method The desien team is chiteet or architect)whe ellent he t advice in Caaoraay ign btief should make clea A set of key dates for programming purposes ld-class.The design brief hould include the follow pert advice A set of performance measures and wing ithin the in relation to equality and indusion oiect.Note that es will need to be for nitored for effectiveness following scheme excellence (Elal The team must tak completion pecialist and expert advice in relstion to ela roject. A statement describing Til's requirements ot environmentsl evsluation These obiectives may be quite specific in with regard to internal TfL and external liaison ay space.the wal processes which will depend equality impact pon the status of the project the amenity of the area covered by the for example sment and health impact asessment The obiectives should sso relate to the Other specialist skills required should also Maver's strateries policies and initis the use of specific modes of tra 3.4 Desi记n process
3.4 Project design briefs TfL is responsible for preparing design briefs for projects on the TLRN and other modal networks. Irrespective of the prime objective of the project, opportunities for streetscape improvements should be taken in accordance with the Streetscape Guidance. More detailed and complex design briefs may require a number of skilled authors and time should be allowed for this in TfL programmes. Better quality information contained in a design brief will result in better understanding and timely completion in the later stages of the project. The brief must communicate the project’s objectives and vision to the design team. The vision can be described in either a detailed manner, when a very firm understanding of what the finished design must include, or in more general terms, when the design team needs to explore the potential of a range of solutions. The design team is responsible for producing excellent designs which satisfy the brief. The design brief should make clear that a like-for-like replacement is not acceptable unless the existing provision is already world-class. The design brief should include the following: • A statement of the vision for the project which will include the requirement for design excellence • A statement of the objectives of the project. These objectives may be quite specific in terms of increasing footway space, the introduction of street trees or improving the amenity of the area covered by the brief, for example The objectives should also relate to the Mayor’s strategies, policies, and initiatives such as accident reduction or increasing the use of specific modes of transport An objective should also be included that relates to the impact of the project on future maintenance needs • Details of the Mayor’s strategies, policies and initiatives that apply to the project. This must include the Transport Strategy and any Local initiatives that are pertinent to the design • A statement of the constraints on the project. These constraints must include details of any transport or planning constraint, overall financial limits of the project, the geographic limits of the site, completion dates of any key tasks or work elements. Other constraints that will limit the design team’s use of space or materials must also be given. TfL should also describe how any political constraint might affect the design process or outcome • A statement requiring that the design team must include a qualified and experienced design specialist (urban designer, landscape architect or architect) who will be engaged in developing the streetscape proposals. The team must take specialist and expert advice in relation to access • Requirements for equalities impact assessment. The team must take specialist and expert advice in relation to equality and inclusion • Requirements for environmental impact assessment (EIA). The team must take specialist and expert advice in relation to EIA or environmental evaluation • Requirements for wider sustainability assessment to incorporate equality impact assessment, strategic environmental assessment and health impact assessment • Other specialist skills required should also be stated • A statement of the likely procurement method of the works. If TfL can provide guidance to the design team on the likely method of procurement, should the project proceed beyond the detailed design stage, this should be included in the brief. This information will help the design team to understand how much detail needs to be provided on construction drawings and will affect the choice of materials or finishes • A statement describing the deliverables. This statement must specify not only design outputs in terms of drawings but also any contract documents, technical specifications, consultation materials, reports or risk assessments that are needed by TfL • Design teams must specify the construction process where they are unable to design out known risks • Contractors must prepare a suitable method statements for handling heavy materials, control of dust and other health and safety issues • A set of key dates for programming purposes • A set of performance measures and milestones within the project. Note that performance measures will need to be monitored for effectiveness following scheme completion • A statement describing TfL’s requirements with regard to internal TfL and external liaison and approval processes which will depend upon the status of the project Trials Before being introduced to the TLRN, new types of equipment, techniques, products, materials, processes or services must successfully undergo trials as set out in TfL’s procedure for trialling new products on the TLRN. Reference Greater London Authority: • Commissioning a sustainable and well designed city. A guide to competitive selection of architects and urban designers, 2005 Design process
49 4 Key design principles
4.1 4 Key design principles
4 Key design principles Introduction To ensure that TfL continually imp the development,with emphasis on heritage tschemes are informed by wide Routes which have a cear purpose (ie.with a its role and protected areas buildingsor other nda start and finish)and refect desire lines ations sultation processt ortive work Legible routes that are understandable. prevail. The street's function and appearance.not only sible anc y of th Understanding the requirements the need for is i des Whilst the provision of an accessible.safe and Whilst the primary role of the TLRN is that of scape for all ridor he work of TfL.it her users need to be ust be bined wit The process of street man ment and the Footways and cycle tracks and lanes that eate str rated.If the from obstruction.including parked ess and bea k.This include car of T clisive streets and a effect on the inter-dependency rea people'senyment All Th Streets that are free from hiding places tha s that underpi T孔 Consistency and clarity ·Adear vision for the different partsof the几RN At-grade.wide crossings set on desire streets Through a consistent approach to the design and and ass city sho nent of the tri.a the various stakeholders at the tart of a project will p vail over the network.By CCTV cowe ette em nsultation during the life of a rage where ropriate in Sustainable design de concers and nt Team,the olice and local authorities akes m ve.The use ot evelop opportunities Continual imp ovement of TfL practices Footways and cycle tracks and lanes that rotecting nha dto ities of the stre and well improved guidance ed surfaces and places tor A holistic approach Integration and co-ordination Design for people Reduction of crime and disorder TfL works with London local authorities and Design teams have a duty to ensure that all .inf impact on the TLRN ation alsc ide gklboued that the T几RNie t of apital's streets. under threat.This should be This is to ensure that: The n eds of pedestrians and cyclists best belance Comprehensive area based im addressed by: ment eed to be aware of a wider range of issues thar ing the theirown particular specialism.suchas esources and skils of a wide range of partners anes with stre iture P ed in aco 。here a opriate,seamless st ordinated and and with The relevant policy context and objectives redundant items removed of each of the til tes as well as lo sin ing and street fu Adequately lit footways and cycle tracks and es to and be seen able pedes The street's context in relation to its surrounding landscape and urban 4.2 Key design principles
4.2 Key design principles Introduction To ensure that TfL continually improves the TLRN and helps London to maintain its role as a world-class city, consistency of approach and excellence of design and workmanship must prevail. Whilst the provision of an accessible, safe and legible streetscape for all users is fundamental to the work of TfL, it must be combined with a desire to create streetscapes with a sense of generosity, robustness and beauty. Excellent, sustainable and inclusive streets can have a significant effect on people’s enjoyment of life in London. A set of key design principles that underpin TfL’s vision to create the world’s best managed streets for a world-class city should be applied across the network. Sustainable design TfL recognises that sustainable design makes a significant contribution to tackling climate change and protecting and enhancing the local environment. A holistic approach Those managing and operating the TLRN are aware that their individual actions have a direct impact on the TLRN streetscape. They are also aware that the TLRN is a significant part of the public realm within London and that other stakeholders have an interest in the role and appearance of the network. Individuals therefore need to be aware of a wider range of issues than their own particular specialism, such as: • The relevant policy context and objectives of each of the TfL teams involved in street management and operation as well as local, regional and national initiatives • The street’s context in relation to its surrounding landscape and urban development, with emphasis on heritage and protected areas, buildings or other designations • The street’s function and appearance, not only as a transport corridor, but also as part of the local community and the activity and land uses on either side of the street corridor • The process of street management and the differing pressures and priorities under which the various parts of TfL work. This includes protective security and the inter-dependency between organisations Consistency and clarity Through a consistent approach to the design and management of the TLRN, a sense of coherence will prevail over the network. By developing a design team approach and a palette of materials, the appearance and legibility of the TLRN will improve. The use of the palette and principles of detailing will create a safe, simple and quiet background to the activities of the street and adjacent land uses. Integration and co-ordination TfL works with London local authorities and London-based organisations to share information and provide a co-ordinated approach to the design and management of the capital’s streets. This is to ensure that: • Comprehensive area based improvement schemes can be implemented using the resources and skills of a wide range of partners • Where appropriate, seamless streetscapes occur at administrative boundaries, avoiding abrupt changes in paving and street furniture materials and patterns Improvement schemes are informed by wide range of stakeholders through co-ordination and a consultation process, thereby avoiding abortive work. Understanding the requirements Whilst the primary role of the TLRN is that of transport, the demands placed on the network by other users need to be understood and incorporated. If the needs of one user or activity cannot be accommodated within the street, the reasons and alternative actions must be fully understood by all. The prioritisation of needs will be more readily accepted where there is: • A clear vision for the different parts of the TLRN • Adequate time for meaningful consultation with the various stakeholders at the start of a project • Ongoing consultation during the life of a project to address stakeholder concerns and develop opportunities • Continual improvement of TfL practices through feedback from TLRN users and improved guidance Design for people Recognising that the TLRN is London’s strategic road network designed to cater for the movement of vehicles, the network is also used by large numbers of pedestrians and cyclists. The needs of pedestrians and cyclists must be addressed by: • Uncluttered footways and cycle tracks and lanes with street furniture placed in a coordinated and logical manner, and with redundant items removed • Adequately lit footways and cycle tracks and lanes to enable pedestrians and cyclists to see and be seen • Routes which have a clear purpose (ie, with a start and finish) and reflect desire lines • Legible routes that are understandable, accessible and obvious by design, reducing the need for pedestrian signage. This includes achieving the most direct route, particularly where subways and footbridges are required • Footways and cycle tracks and lanes that are free from obstruction, including parked vehicles • Streets that are free from hiding places that facilitate crime and fear of crime • At-grade, wide crossings set on desire lines with level changes for subways and footbridges avoided wherever possible • CCTV coverage where appropriate in consultation with TfL’s Enforcement Team, the police and local authorities • Footways and cycle tracks and lanes that are comfortable to use, with even and well drained surfaces and places to rest Reduction of crime and disorder Design teams have a duty to ensure that all projects minimise crime and produce a safe and secure environment where people do not feel under threat. This should be done in conjunction with other key design principles to achieve the best balance. 4 Key design principles Key design principles
Function and safety Materlals and maintenance The management of the streets must enable all ted into design of the TLRN Adequate investment and continual care is the safe ceable and y are designed. scapes.This can be achieved by ion and safety et k table withir tion details to ensure a long life spar din St ubject to the reetscape .Choosing materials and designs that embody The design should: Access for all ·Ensure that vehicle ave nd products that are flexible 它wy eing dwhere they are required must incu a du Reducing the number and variety of materials can be minimised The right of passage should also be used Achieve alevel of ilkn hat caters fo pes are the security eedsof cial inte and maintained to the appropriate standard .People of all sbilities can ials which h ourced with modes of transport and change between ther regard Streetscape design must respect the chara indered Implementing GLA's responsible procurement TI RN by street policies tes of la b vitality and Adequate lighting imp es safety fo ll et The design team should ensure the following: Streetscape enhancements that respond to .Opportunities can be taken to enable people e ir n the local aspirations and do not compromise locs teract socially ·The work on the TLRN ir tes with the epe,local ecol ent nd res ages and sp ial cted.This includes Key design principles 4.3
4.3 Function and safety The management of the streets must enable all users to use the space efficiently and safely for the purpose they are designed. Designing and managing for function and safety should be done in conjunction with other key design principles, as described in Streetscape Guidance. The design should: • Ensure that vehicle speeds are appropriate for the surroundings, with controls being introduced where they are required • Improve legibility so that the use of bollards, pedestrian guard rails, signs and road markings can be minimised • Achieve a level of illumination that caters for the security needs of pedestrians and cyclists as well as the safety requirements of drivers Recognition of local context and distinctiveness Streetscape design must respect the character of the place through which the TLRN passes, not only the physical attributes of landscape and townscape, but also the activity, vitality and distinctiveness of the local community. The design team should ensure the following: • Streetscape enhancements that respond to local aspirations and do not compromise local distinctiveness • The work on the TLRN integrates with the landscape, local ecology or built environment and respects local linkages and spatial arrangements • Local heritage is respected. This includes statutory and local designations • Functional requirements of activities and uses that take place either side of the street are integrated into the design of the TLRN streetscape In order to recognise local context, alternatives to the palette of materials may be acceptable within special areas, subject to the approval of TfL’s streetscape specialists. Access for all The public realm is a place where people have a right to ‘pass and re-pass’ on the public highway, which TfL has a duty to protect. This right must include people with mobility and visual impairments and any other disability. The right of passage should also be extended to encourage the use of the public realm for increased social interaction, unless there are foreseeable safety implications. Particularly important is the creation of streets where: • People of all abilities can access different modes of transport and change between them • People can move along footways unhindered by street clutter, poor quality materials and inappropriately located obstacles • Adequate lighting improves safety for all street users and especially for more vulnerable members of society • Opportunities can be taken to enable people to interact socially on the street Materials and maintenance Adequate investment and continual care is necessary to ensure safe, serviceable and sustainable streetscapes. This can be achieved by: • Using reputable, durable materials and construction details to ensure a long life span • Choosing materials and designs that embody simple, ageless solutions for the TLRN to ensure that the street does not become a victim of short-term design fashion • Using materials and products that are flexible to change, such as streetlight columns that can be adapted to take signs, signals and banners • Reducing the number and variety of materials used • Ensuring that existing streetscapes are managed and maintained to the appropriate standard • Using materials which have been sourced with regard to their environmental impact • Implementing GLA’s responsible procurement policies Key design principles
5 Palette of materials
5.1 5 Palette of materials