1. A vehicle surroundings monitoring apparatus, comprising: frontal information detecting means for detecting at least solid object information and traveling road information in front of an own vehicle; preceding vehicle trace calculating means for calculating a trace of a preceding vehicle from past data of said preceding vehicle; first own traveling path calculating means for calculating a first traveling path of said own vehicle based on said traveling road information; second own traveling path calculating means for calculating a second traveling path of said own vehicle based on said trace of said preceding vehicle; and final own traveling path calculating means for calculating a final traveling path of said own vehicle based on said first traveling path and said second traveling path;