Design-build contracts with performance-based specifications are believed to raise productivity and the innovation rate. Such specifications for highway and bridge contracts may create risks, be too detailed or difficult to verify. The purpose has been to analyse how performance-based requirements are used in Swedish design-build contracts for highway projects. How contractors are encouraged to provide innovative technologies is emphasized. Generic documents from the Swedish Transport Administration for design-build contracts have been studied, and case studies of six design-build contracts with performance-based requirements have been made. Technical specifications for these contracts have been analysed and interviews held with both client and contractor project managers. Results include that it is along the time axis that major obstacles to innovation arise. Before the contractor is able to develop innovative solutions, the initial design plan restricts the highway geometry. During construction, a mix of performance and prescriptive requirement formulations is more of a challenge than clashes between performance requirements. The client may avoid performance language, more so for bridges than road surfaces, because of concerns with efficient maintenance in the future. It is recommended that performance-based specifications should be less detailed and that a life cycle view of highway projects should support innovative technologies.

中文翻译：

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设计建造高速公路项目中性能规格的性能

人们认为，基于性能的规格的设计建造合同可以提高生产率和创新率。公路和桥梁合同的此类规范可能会带来风险，过于详尽或难以验证。目的是分析在高速公路项目的瑞典设计建造合同中如何使用基于性能的要求。强调了如何鼓励承包商提供创新技术。研究了瑞典运输管理局关于设计建造合同的通用文件，并对六个基于性能要求的设计建造合同进行了案例研究。对这些合同的技术规范进行了分析，并与客户和承包商项目经理进行了访谈。结果包括创新沿着主要时间轴出现。在承包商能够开发创新解决方案之前，初始设计计划会限制高速公路的几何形状。在施工过程中，性能和规范性需求公式的混合比性能需求之间的冲突更具挑战性。客户可能会避免使用性能语言，尤其是对于桥梁而不是路面，这是因为担心将来会进行高效维护。建议基于性能的规范不应该太详细，高速公路项目的生命周期视图应支持创新技术。绩效与规定性要求之间的混合比绩效要求之间的冲突更具挑战性。客户可能会避免使用性能语言，尤其是对于桥梁而不是路面，这是因为担心将来会进行高效维护。建议基于性能的规范不应该太详细，高速公路项目的生命周期视图应支持创新技术。绩效与规定性要求之间的混合比绩效要求之间的冲突更具挑战性。客户可能会避免使用性能语言，尤其是对于桥梁而不是路面，这是因为担心将来会进行高效维护。建议基于性能的规范不应该太详细，高速公路项目的生命周期视图应支持创新技术。