為謀遏止最低標制度可能衍生之種種問題，並滿足政府採購需求之多樣性，政府採購法中明定得採最有利標，對價格與品質、技術、管理等項目進行綜合評選，以遴選採購效益最佳之投標廠商。目前機關採最有利標方式辦理工程採購在防止低價搶標等方面已有顯著成效，但執行上往往因為參與評選人員認知有別，容易產生爭議，或評選出之廠商未必是在品質、價格等對機關為最有利者，相關問題亟待檢討改善。此外，現行最有利標評選辦法仍有未盡周延之處，諸如有關序位評定之方式，容易造成偏差，而且對於價格乙項以及工期等商業條款如何納入評比亦無明確準則可供依循。
有鑑於此，本研究乃針對採最有利標辦理工程採購之重點課題進行探討，參酌國內外最有利標評選之作法與相關經驗，冀能研訂最有利標採階段性評選方式、價格評分方式以及評估最有利標之執行成效，以提供機關採用最有利標辦理採購之參考。
本研究首先將透過國內外相關文獻蒐集整理，探討歐美先進國家所制訂最有利標制度及實施方式。並針對政府採購主管機關與工程主辦機關進行訪談，探討最有利標執行之現況及相關問題，以謀求可能之改善方案。再者，參酌公共選擇理論之群體決策作法，研析最有利標採階段性評選之可行方案。另參考歐盟EMAT、日本及新加坡有關價格之評比方式，探討各種價格計分模型適用之方式。此外，針對查核金額以上採最有利標之建築工程，根據其施工查核之結果，評估其品質與進度之執行成效。

The vast majority of public works are procured using the lowest bid system, it often leads to problems such as unreasonably low bid, bid rigging, unqualified contractors, and poor quality, etc. To solve the above mentioned problems on one hand, and to fulfill the needs of diversified government procurement on the other, the “Most Advantageous Bid" system has been introduced in the Government Procurement Law. In recent years, it is recognized in the construction industry that the most advantageous bid could be a better practice for public works.Whatsoever, this kind of approach has certain drawbacks such as disputes arised during the award process, since the evaluation method and respective criteria ,e.g. for price scoring ,of this multiparameter bid award system is not available so far.
In this study ,it is aimed to improve the a bidder evaluation model for the most advantageous bid system as prescribed in the Government Procurement Law. The EMAT(Economically Most Advantageous Tender )system and related scoring methods adopted in Singapore, Japan ,UK and European Commission will be reviewed at first. Then ,current practices and major difficulties with regard to the most advantageous bid system in public works will be investigated through extensive interviews and questionnaire survey. And a modified framework of tender evaluation and contract award under the most advantageous bidding method will be developed accordingly. Indicative ranges of quality and price ratios appropriate to certain type of projects will be provided, and various price scoring methods will be assessed. Moreover, case studies will be conducted to evaluate the effectiveness of utilizing the most advantageous approach through the comparison of performance ratings by construction quality assessment for building construction projects. Conseqently, guidelines and related measures of promoting and implementing the most advantageous bid system in selected projects in public works are proposed to the concerned authority.

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