A measuring system comprising: a first measuring unit (110; 111, 112) configured to measure an object in front of a moving body in a first measuring area; a second measuring unit (121, 122) configured to measure the object in a second measuring area, the second measuring area being different from the first measuring area; a determining unit configured to determine whether a movement of the object satisfies a predetermined condition based on a measuring result of the first measuring unit (110; 111, 112); and a controller configured to cause the second measuring unit (121, 122) to start measuring the object in response to an event in which the determining unit determines that the object satisfies the predetermined condition and at least part of the object deviates from the first measuring area; wherein the first measuring unit (110; 111, 112) is configured to specify an object as a monitoring target, the second measuring unit (121, 122) is configured to start measuring the monitoring target when the monitoring target deviates from the first measuring area and to continue measuring until the monitoring target deviates from the second measuring area; characterized in that: the determining unit is configured to determine whether the movement of the object satisfies the predetermined condition, based on a distance between the object and the moving body, a relative speed between the object and the moving body, and a moving amount of the object in a direction substantially perpendicular to a moving direction of the moving body per unit time; wherein a measuring angle of the second measuring unit (121, 122) with respect to a lateral side of the moving body is greater than a measuring angle of the first measuring unit (110; 11, 112) with respect to a front side of the moving body; and the first measuring unit (110; 111, 112) includes a stereo imaging unit or a laser radar unit, wherein when the fist measuring unit (110; 111, 112) includes a stereo imaging unit, the second measuring unit (121, 122) includes a laser radar unit, and when the first measuring unit (110; 111, 112) includes a laser radar unit, the second measuring unit (121; 122) includes a stereo imaging unit. a first measuring unit (110; 111, 112) configured to measure an object in front of a moving body in a first measuring area; a second measuring unit (121, 122) configured to measure the object in a second measuring area, the second measuring area being different from the first measuring area; a determining unit configured to determine whether a movement of the object satisfies a predetermined condition based on a measuring result of the first measuring unit (110; 111, 112); and a controller configured to cause the second measuring unit (121, 122) to start measuring the object in response to an event in which the determining unit determines that the object satisfies the predetermined condition and at least part of the object deviates from the first measuring area; wherein the first measuring unit (110; 111, 112) is configured to specify an object as a monitoring target, the second measuring unit (121, 122) is configured to start measuring the monitoring target when the monitoring target deviates from the first measuring area and to continue measuring until the monitoring target deviates from the second measuring area; characterized in that: the determining unit is configured to determine whether the movement of the object satisfies the predetermined condition, based on a distance between the object and the moving body, a relative speed between the object and the moving body, and a moving amount of the object in a direction substantially perpendicular to a moving direction of the moving body per unit time; wherein a measuring angle of the second measuring unit (121, 122) with respect to a lateral side of the moving body is greater than a measuring angle of the first measuring unit (110; 11, 112) with respect to a front side of the moving body; and