Abstract: A vehicle driving support system is provided with an environment detecting means for detecting objects existing around a vehicle and for producing output environment information, a command unit to specify a running mode of the vehicle, information processing means for generating driving operation reference information suitable for the specified running mode of the vehicle by processing the environment information specified in accordance with the running mode and a display unit to display the driving operation reference information. The information processing means monitors the inter-vehicle distance to a vehicle stopping in front of the vehicle and generates driving operation reference information to inform the driver of the starting of the precedent vehicle when the vehicle is in the congestion running mode.