Single-window system Single-window system The single-window system is a trade facilitation idea. As such, the implementation of a single window system enables international (cross-border) traders to submit regulatory documents at a single location and/or single entity. Such documents are typically customs declarations, applications for import/export permits, and other supporting documents such as certificates of origin and trading invoices. The main value proposition for having a single window for a country or economy is to increase the efficiency through time and cost savings for traders in their dealings with government authorities for obtaining the relevant clearance and permit(s) for moving cargoes across national
Single-deck bus Single-deck bus A single-decker bus or single-decker is a bus that has a single deck for passengers. Normally the use of the term "single-decker" refers to a standard two-axled rigid bus, in direct contrast to the use of the term double-decker bus, which is essentially a bus with two passengers decks and a staircase. These types of single-deckers may feature one or more doors, and varying internal combustion engine positions. In regions where double-deckers are not common, the term "single-decker" may lack common usage, as in one sense, all other main types of bus have a single deck. Also, the