Crane vehicle comprising: - a carrier; - a boom that is supported by the carrier in an undulating and telescopic manner; - a jib that is attachable to, and detachable from, a front end of the boom; - a first hook that is suspendible from a front end of the jib; - a second hook that is suspendible from only the front end of the boom; - an actuator (32, 33, 34, 35) that causes the boom to be telescopic, causes the boom to undulate, and winds and unwinds a rope (27, 28) by which each of the first hook and the second hook is suspended; - a first over-winding sensor that outputs a first over-winding signal obtained in response to an event where a suspension length of the first hook is shorter than a threshold; - a second over-winding sensor that outputs a second over-winding signal obtained in response to an event where a suspension length of the second hook is shorter than a threshold; - an operation unit that outputs an operation signal corresponding to an operation in response to a reception of the operation of instructing an actuation of the actuator (32, 33, 34, 35); and - a controller that controls the actuation of the actuator (32, 33, 34, 35), wherein - in response to the output of the operation signal, the controller is configured to execute an actuation control process of causing the actuator (32, 33, 34, 35) to execute the actuation corresponding to the operation signal, - in response to the output of the first over-winding signal or the second over-winding signal during the actuation control process, the controller is configured to execute a stopping process of stopping the actuation of the actuator (32, 33, 34, 35), characterized in that - the first hook is suspendible also from the front end of the boom; - the first over-winding sensor is attachable to, and detachable from, the front end of the boom and is attachable to, and detachable from, the front end of the jib, and outputs a first identification signal in response to an installation to one of said front ends; - the second over-winding sensor is attachable to, and detachable from, only the front end of the boom, and outputs a second identification signal in response to an installation to said front end; - in response to the first output of the operation signal corresponding to a specific actuation of reducing a suspension length, the controller is configured to execute a notification process of notifying whether or not the first identification signal and the second identification signal have already been output. - a carrier; - a boom that is supported by the carrier in an undulating and telescopic manner; - a jib that is attachable to, and detachable from, a front end of the boom; - a first hook that is suspendible from a front end of the jib; - a second hook that is suspendible from only the front end of the boom; - an actuator (32, 33, 34, 35) that causes the boom to be telescopic, causes the boom to undulate, and winds and unwinds a rope (27, 28) by which each of the first hook and the second hook is suspended; - a first over-winding sensor that outputs a first over-winding signal obtained in response to an event where a suspension length of the first hook is shorter than a threshold; - a second over-winding sensor that outputs a second over-winding signal obtained in response to an event where a suspension length of the second hook is shorter than a threshold; - an operation unit that outputs an operation signal corresponding to an operation in response to a reception of the operation of instructing an actuation of the actuator (32, 33, 34, 35); and - a controller that controls the actuation of the actuator (32, 33, 34, 35), wherein - in response to the output of the operation signal, the controller is configured to execute an actuation control process of causing the actuator (32, 33, 34, 35) to execute the actuation corresponding to the operation signal, - in response to the output of the first over-winding signal or the second over-winding signal during the actuation control process, the controller is configured to execute a stopping process of stopping the actuation of the actuator (32, 33, 34, 35), characterized in that - the first hook is suspendible also from the front end of the boom; - the first over-winding sensor is attachable to, and detachable from, the front end of the boom and is attachable to, and detachable from, the front end of the jib, and outputs a first identification signal in response to an installation to one of said front ends; - the second over-winding sensor is attachable to, and detachable from, only the front end of the boom, and outputs a second identification signal in response to an installation to said front end; - in response to the first output of the operation signal corresponding to a specific actuation of reducing a suspension length, the controller is configured to execute a notification process of notifying whether or not the first identification signal and the second identification signal have already been output.