He said, "The difference between an ordinary road and a superhighway is that the materials have to be better, and the road very smooth for fast traveling cars, and since a superhighway has no traffic lights or intersections, we have to build overpasses and other separations between lanes, requiring many bridges.
泗水公路是東爪哇第一條高速公路，工程負責人方智為主任分析：「高速公路與普通公路的差別，在於品質較高，能讓汽車快速平穩地前進；無紅綠燈，與舊有道路交會處，均採立體建築（建高架橋），所以橋特別多。