車輛載重管理為公路管理中相當重要之環節，國內高速公路目前仍然以傳統式靜態地磅作為管理之工具。然目前高速公路已經實施全電子計程收費，所有車輛均可以不停等、免開窗、不減速完成繳交通行費，突顯了靜態地磅站運作效率較差之問題。因此國內亟須導入動態地磅(Weigh-In-Motion)技術，以更進一步提昇車輛載重管理之效率。本研究針對國內高速公路動態地磅技術之導入進行應用規劃，建議採用主線篩選式動態地磅，疑似超載車則以靜態地磅複磅並做為取締依據。本研究並針對包含動態地磅設置地點條件要求、資訊可變標誌顯示車號之數量、車號顯示之機制、違規逃磅車輛之偵測取締機制以及與公路警察配合機制等課題進行研究，以作為國內未來推動參考。

Truck weight control is important for roadway management. Traditional static scales are still used on the freeway system in Taiwan. As the implementation of electronic distance-based toll collection on the freeway system in Taiwan, all the freeway vehicles can pass through toll sections without slowing down underlining the poor operational efficiency of the traditional truck scales that require the vehicle to come to a stop. Therefore, weigh-in-motion (WIM) system is needed in order to improve the efficiency of truck weight control. Mainlane preselecting mode of WIM is recommended in this research. With mainlane preselecting mode of WIM, suspected overloaded trucks are screened and directed to the static scales. This research present the implementation details of the mainlane preselecting mode of WIM, including the location requirement of installing WIM system, types of vehicles ID should be displayed on the changeable message sign (CMS), law enforcement practices, and secondary message for the overloaded trucks return illegally back to the main roadway using bypass ways. The findings of this research could be used as basis of future implementation of WIM in Taiwan.