公共設施保留地，簡稱公保地，因早年都市計畫，多未表明採區段徵收或市地重劃方式辦理，故須以徵收方式取得公保地，隨著未取得年限延長，所需徵購費用逐年增加，政府財政負擔加重，甚至無力徵收；然因取消對公保地取得年限限制、地主使用上受到限制、徵收價格與市價存在價差等原因，長年未取得公保地，有侵害人民權益疑慮。
因應公保地議題，各直轄市、縣（市）政府辦理公設專通，依據102年11月29日發布《都市計畫公共設施保留地檢討變更作業原則》辦理，部分公共設施如公園、綠地、廣場、兒童遊樂場，僅原則性說明應依實際狀況、需求核實檢討之，實施者可制定因地制宜之計算、判斷方式，卻也可能造成無所適從或標準不一之結果，且通盤檢討時程長，若能加速評估過程，可提升行政效率，除考量增加遊憩設施用地外，應考量人口實際使用狀況，提高土地資源使用效率，故將以遊憩設施用地為對象，建立可及性指標進行檢討。
本研究實證研究地區選擇臺中市大甲都計區及大里都計區，利用高斯兩階段流動搜尋法及雙變量地域型空間自相關，將五項遊憩設施用地整併，建立具有操作性、可通用之可及性指標，以縮短評估時程，同時建立可視化之空間供需檢視圖，有利於判讀供需不平衡地區，並給予解編、加速開闢或低利用公設轉用建議，再透過服務範圍包絡分析，建議解編或開闢順序。
實證結果發現，土地使用為住宅區及商業區之地區，對於遊憩設施用地需求相對較高，若已開闢設施用地提供之服務能滿足需求便會呈現H-H供滿足需；反之，土地使用為農業區之地區，對於遊憩設施用地需求相對較低，若已開闢設施用地提供之服務能滿足需求便會呈現L-L供滿足需，若無法滿足，則會呈現超額供給或超額需求，與加入未開闢遊憩設施用地及學校用地兩種開闢情形比較後，前者建議解編，後者建議加速開闢或加速低利用公設轉用。

Land Reserved for Public Facilities (LRPF), due to the urban planning in the early years, many did not specify the method of Zone expropriation or Land Consolidation, so LRPF must be obtained by Expropriation. The financial burden of the government increased year by year, and the government was even unable to expropriate it. However, due to the cancellation of the limit on the acquisition of LRPF, restrictions on the use of landowners, and the price difference between the expropriated price and the market price, the LRPF has not been obtained for many years.
In response to the issue of LRPF, the municipalities and county (city) governments handle comprehensive review projects in accordance with the " Land Reserved for Public Facilities (LRPF) Review and Change Operation Principles ". Some land use for parks, green spaces, plaza, and playground, only the principles explanation should be verified and reviewed according to the actual situation and needs. If the evaluation process can be accelerated, administrative efficiency can be improved. Therefore, recreational public facilities will be used as the object to establish accessibility indicators for review.
Use the Gaussian two-step floating catchment area and Bivariate Local Moran’s I to establish an operable, shorten the evaluation time process, establish a visualized spatial supply and demand visualize graph which is conducive to the identification of unbalanced supply and demand areas, and the proposal is made to retain or change to other public facilities.
The results show that areas where have relatively high demand services provided by the developed facility can meet the demand, there will be an H-H balance of supply and demand; on the contrary, the demand for recreational facility is relatively low, there will be an L-L balance of supply and demand. After comparing the two development situations of undeveloped facility and school, the former suggests cancellation, and the latter suggests accelerating development or accelerating the conversion of low-utilization facilities.

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