Design Consideration for Motorists at Urban Signalize Intersection

Accidents are highly increasing and traffic engineers are struggling to reduce the injuries and fatalities on road. Traffic control devices such as traffic signal and roundabout assign right of way to the drivers approaching intersections. Inappropriate traffic design can give worst scenario at intersections followed by accident, more delay or even being gridlock. Apart from traffic designing, the driver¿s attitude and behavior are quite significant parameters to make intersection safer. A large amount of money is spent for somebody who passed away due to involving in an accident. How can a composite traffic control devices be applicable? How does it affect delay? What would happen to right of way if traffic signal breaks down?