Abstract: An evaluation device 1 evaluates a quality of a bumper 3 in a vehicle including a radar 2 that detects a target T by irradiating an outside of a vehicle body B with an electromagnetic wave along an optical axis and the bumper 3 that shields the radar 2. The evaluation device 1 includes an intensity parameter measurer 11 that measures and an intensity parameter value of the reflected wave passing through the bumper 3 and received from the target T by the radar 2, an angle information acquirer 12 that that acquires angle information : on an angle of a a direction of arrival of the reflected wave from the target T with respect to the optical axis; and a quality evaluator 15 that evaluates the quality of the bumper 3. based on the intensity parameter value, a predetermined reference value for the intensity parameter value, and the angle information.

Abstract: When a host vehicle makes a lane change from a first lane into a second lane, an approach suppression control unit of a travel assist device monitors whether or not another vehicle, which is traveling in a third lane existing on an opposite side from the first lane with the second lane interposed therebetween, is making a lane change into the second lane. In the case it is determined that the other vehicle is making a lane change from the third lane into the second lane, the approach suppression control unit implements an approach suppression control for suppressing the host vehicle and the other vehicle from approaching each other.