Though, there has been tremendous amount of research in recent years in making the existing parking system
intelligent through different technologies such as Global Positioning System (GPS) based system, Global System
for Mobile Communication (GSM) based systems, Radio Frequency Tag/IDs (RFIDs) based systems, and likewise
many others. Even then, while designing a reliable sensor based parking system, there has always been a confusion
on two post important factors that is 1) Best sensor and 2) Best location for the sensor deployment for accurate and
reliable parking slot detection and vehicle detection.