To provide a system of simple constitution without any special software that enables a drawer to confirm, modify and get approval of an existing drawing in a quick response and enables a construction worker to refer to approved regulation drawings all the time.

An agency to provide service of approval for use of a road receives orders for the agency business from general public customers through an internet 7. From the order information, the agency draws a road regulation drawing body by using a software installed within the agency site terminal and keeps its image processed drawing as the original. Adding the visualized information of a road regulating method to the original, the agency draws a compound road regulation drawing and presents it to a customer through a network. By the use of internet terminal, the customer confirms the compound road regulation drawing, indicates the points to be corrected and approves them. The agency keeps the compound road regulation drawing consisting of image data approved by the customer as the original.