A motorcycle includes a liquid pressure-generating unit, a pressure-regulating unit interposed between the liquid pressure-generating unit and a wheel brake, and a control unit for controlling operation of the pressure-regulating unit. The motorcycle also includes a support case, supportively containing the control unit and disposed on a lateral side of an engine body mounted on a body frame of the motorcycle, with the support case interposed between the control unit and the engine body. Further, a running airflow leading-in part for permitting traveling airflow to pass toward said control unit is formed at a front part of the support case, and a traveling airflow leading-out part is formed at a rear part of the support case for leading out the traveling airflow after the airflow has passed through at least one lateral side of the control unit. This arrangement lessens the influence of the heat from an engine upon the control unit while disposing the control unit in the vicinity of the engine body.