There has been recent interest in intelligent vehicle technologies, such as advanced driver assistance systems (ADASs) or
in-vehicle information systems (IVISs) that offer a significant enhancement of safety and convenience to drivers and
passengers. However, unsuitable design of HMI (Human Machine Interface) must increase driver distraction and workload,
which in turn increase the chance of traffic accidents. Distraction in particular often occurs under a heavy driving workload
due to multitasking with various electronic devices like a cell phone or a navigation system while driving. According to the
2005 road traffic accidents in Korea report published by the ROad Traffic Authority (ROTA), more than 60% of the traffic
accidents are related to driver error caused by distraction. This paper suggests the structure of vehicle environment for
real-time driving behavior monitoring system while driving which is can be used the driver workload management systems
(DWMS). On-road experiment results showed the feasibility of the suggested vehicle environment for driving behavior
monitoring system.