A vehicle lamp system comprising: a vehicle lamp that forms a first light distribution pattern and a second light distribution pattern, wherein the second light distribution pattern forms an irradiation area where at least a portion thereof is shifted from an irradiation area formed by the first light distribution pattern; characterized in that a controller that controls the vehicle lamp to switch between a first state and a second state via an intermediate state (Lo, Hi1), wherein the intermediate state (Lo, Hi1) is maintained for a certain time, wherein in the first state the first light distribution pattern is formed, wherein in the second state the second light distribution pattern is formed, wherein in the intermediate state (Lo, Hi1) a first irradiation area and a second irradiation area are matched in brightness, the first irradiation area is changed from an illuminated state to a non-illuminated state due to the switching, and the second irradiation area is changed from a non-illuminated state to the illuminated state due to the switching, and wherein the first light distribution pattern forms an irradiation area, which is on a opposite lane side, which is opposite an own lane of the vehicle, and the irradiation area is above a cut-off line of a low-beam light distribution pattern and the first light distribution pattern also forms a non-irradiation area on the own lane side of the vehicle, respectively, wherein the second light distribution pattern forms an irradiation area, which is on the own lane side of the vehicle and the irradiation area is above the cut-off line of the low-beam light distribution pattern and the second light distribution pattern forms a non-irradiation area on the opposite lane side, respectively. a vehicle lamp that forms a first light distribution pattern and a second light distribution pattern, wherein the second light distribution pattern forms an irradiation area where at least a portion thereof is shifted from an irradiation area formed by the first light distribution pattern; characterized in that a controller that controls the vehicle lamp to switch between a first state and a second state via an intermediate state (Lo, Hi1), wherein the intermediate state (Lo, Hi1) is maintained for a certain time, wherein in the first state the first light distribution pattern is formed, wherein in the second state the second light distribution pattern is formed, wherein in the intermediate state (Lo, Hi1) a first irradiation area and a second irradiation area are matched in brightness, the first irradiation area is changed from an illuminated state to a non-illuminated state due to the switching, and the second irradiation area is changed from a non-illuminated state to the illuminated state due to the switching, and wherein the first light distribution pattern forms an irradiation area, which is on a opposite lane side, which is opposite an own lane of the vehicle, and the irradiation area is above a cut-off line of a low-beam light distribution pattern and the first light distribution pattern also forms a non-irradiation area on the own lane side of the vehicle, respectively, wherein the second light distribution pattern forms an irradiation area, which is on the own lane side of the vehicle and the irradiation area is above the cut-off line of the low-beam light distribution pattern and the second light distribution pattern forms a non-irradiation area on the opposite lane side, respectively.