Detector Technology

Abstract

Inductive loop detectors are the most common technology for detecting vehicles. However, they have some disadvantages such as disruption to traffic flow during installation and maintenance, higher failure rate under particular conditions, and inflexibility. Professionals are seeking alternatives to inductive loops. Market demands and technology advancement have inspired manufacturers to develop new detector devices with improved performance and capabilities. A large quantity of detector devices with different operation theories now is available on the market. This paper reports on the present status of detector technologies and on development trends in these technologies.