An Integrated System of Freeway Toll and Traffic Data Investigation: PDF417 Two-Dimensional Bar Code System
Yongfei Yan, Shunying Zhu, Hong Wang · 2009
Aiming at the deficiency of being difficult to investigating and analyzing the traffic data by the toll data of freeway, utilizing the information storage technology of PDF417 two-dimensional (PDF417-2D) bar code, this paper sets up an integrated system of freeway toll and traffic data investigation, makes the encoding rules and content of record information which on the PDF417-2D bar code, and presents the procedure of toll and traffic data investigating. Combining Microsoft SQL Server data base management system and utilizing the data information of PDF417-2D bar code, this paper also proposed methods of freeway traffic volume OD investigation, creating OD matrix of entrances and exits, and calculating average traffic volume of section, which has offered a new approach to the unity of freeway toll and traffic data investigating and analyzing.