A vehicular vision and alert system includes a camera disposed at a windshield of a vehicle so as to have a field of view forward of the vehicle as the vehicle travels along a traffic lane of a road. As the vehicle travels along the road, the system may determine, via processing by an image processor of image data captured by the camera, traffic traveling along another traffic lane and may generate a traffic alert indicative of the determined traffic. As the vehicle travels along the road, the system may determine, via processing of captured image data, a vehicle accident involving another vehicle and may transmit an accident alert communication to a remote system. As the vehicle travels along the road, the system may determine, via processing of captured image data, a traffic jam index representative of a degree of traffic traveling along the other traffic lane.