Which type of vehicle detection installed is considered the most labor intensive?

Answer: B — Inductive loop detection

Inductive loop detection is considered the most labor-intensive type of vehicle detection because it involves significant installation work. This system requires cutting into the pavement to install loops of wire that are embedded in a saw-cut slot. The installation process typically includes preparing the roadway surface, placing the wire loops at specified locations, and ensuring proper connections to the traffic signal control system. This can be quite time-consuming, often necessitating traffic control measures to ensure safety and minimize disruption during the installation process. In contrast, other vehicle detection methods such as video detection, radar detection, and infrared detection generally involve less invasive installation. For instance, video detection systems involve mounting cameras and do not require modifications to the pavement, while radar and infrared systems can often be installed using pole-mounted devices. These alternative detection methods tend to be more straightforward and quicker to implement, contributing to the perception that inductive loop detection is more labor-intensive.