A vehicle lighting system comprising: an emission unit configured to emit a first light and a second light to a periphery of an own vehicle, the second light having a higher directivity than the first light; a first detection unit configured to detect a physical body in the periphery of the own vehicle by using image information acquired by capturing the periphery of the own vehicle; a second detection unit configured to detect the physical body by emitting an electromagnetic wave to the periphery of the own vehicle and acquiring a reflection wave of the electromagnetic wave; a first control unit configured to control the emission unit such that the emission unit emits the first light to the physical body detected by the second detection unit; an object determination unit configured to determine whether the physical body detected by the first detection unit in a state where the first light is being emitted is an target object to which a caution needs to be given; a second control unit configured to control the emission unit such that the emission unit emits the second light toward a predetermined range around the target object, when the object determination unit determines that the physical body is the target object; and a first determination unit configured to determine whether a detection result of the first detection unit acquired without an emission of the first light is insufficient to determine whether the physical body is the target object, wherein the first control unit is configured to control the emission unit such that the emission unit emits the first light to the physical body, when the first determination unit determines that the detection result of the first detection unit is insufficient. an emission unit configured to emit a first light and a second light to a periphery of an own vehicle, the second light having a higher directivity than the first light; a first detection unit configured to detect a physical body in the periphery of the own vehicle by using image information acquired by capturing the periphery of the own vehicle; a second detection unit configured to detect the physical body by emitting an electromagnetic wave to the periphery of the own vehicle and acquiring a reflection wave of the electromagnetic wave; a first control unit configured to control the emission unit such that the emission unit emits the first light to the physical body detected by the second detection unit; an object determination unit configured to determine whether the physical body detected by the first detection unit in a state where the first light is being emitted is an target object to which a caution needs to be given; a second control unit configured to control the emission unit such that the emission unit emits the second light toward a predetermined range around the target object, when the object determination unit determines that the physical body is the target object; and a first determination unit configured to determine whether a detection result of the first detection unit acquired without an emission of the first light is insufficient to determine whether the physical body is the target object, wherein the first control unit is configured to control the emission unit such that the emission unit emits the first light to the physical body, when the first determination unit determines that the detection result of the first detection unit is insufficient.