Traditional inspection methods often induce high labor costs and are extremely time-consuming. Moreover, these approaches rely on human observation and individual interpretation, thus being very unreliable and inaccurate.

Given the limited budget allocated to the maintenance of these infrastructure, transportation asset managers struggle to determine their priorities for construction plans using these methods. 

Eventually, transportation infrastructure are not monitored and maintained properly, affecting the cityscape, diminishing citizen satisfaction, and even posing major threats to travel safety.