A saddle-type vehicle comprising: a vehicle body frame, a gearbox having a clutch operated by actuation of a slave cylinder, wherein the clutch is a normally open clutch; a hydraulic actuator having a master cylinder configured to generate a hydraulic pressure in a working fluid; a hydraulic valve unit configured to control transmission of the hydraulic pressure generated by the master cylinder to the slave cylinder; a master-side connecting pipeline configured to connect the master cylinder and the hydraulic valve unit; and a slave-side connecting pipeline configured to connect the hydraulic valve unit and the slave cylinder, wherein the hydraulic valve unit includes a main oil passage configured to establish fluid communication between a side of the master cylinder and a side of the slave cylinder, and wherein the hydraulic valve unit further includes a solenoid valve, wherein the solenoid valve is a so-called normally open valve and being configured to open or shut off the main oil passage and being configured to be closed after a supply of hydraulic pressure toward the clutch in order to maintain and supplement the hydraulic pressure to an extent of a decrease in pressure, characterised in that, the hydraulic valve unit further includes a bypass oil passage and a one-way valve, the bypass oil passage bypasses the solenoid valve, and the one-way valve is provided on the bypass oil passage and causes a working fluid to flow in a direction from an upstream-side oil passage to a downstream-side oil passage of the main oil passage, and wherein the hydraulic valve unit is disposed at a position closer to the slave cylinder than the hydraulic actuator, and the master-side connecting pipeline is formed of a metal-based material, and the slave-side connecting pipeline is formed of a rubber-based material. a vehicle body frame, a gearbox having a clutch operated by actuation of a slave cylinder, wherein the clutch is a normally open clutch; a hydraulic actuator having a master cylinder configured to generate a hydraulic pressure in a working fluid; a hydraulic valve unit configured to control transmission of the hydraulic pressure generated by the master cylinder to the slave cylinder; a master-side connecting pipeline configured to connect the master cylinder and the hydraulic valve unit; and a slave-side connecting pipeline configured to connect the hydraulic valve unit and the slave cylinder, wherein the hydraulic valve unit includes a main oil passage configured to establish fluid communication between a side of the master cylinder and a side of the slave cylinder, and wherein the hydraulic valve unit further includes a solenoid valve, wherein the solenoid valve is a so-called normally open valve and being configured to open or shut off the main oil passage and being configured to be closed after a supply of hydraulic pressure toward the clutch in order to maintain and supplement the hydraulic pressure to an extent of a decrease in pressure, characterised in that, the hydraulic valve unit further includes a bypass oil passage and a one-way valve, the bypass oil passage bypasses the solenoid valve, and the one-way valve is provided on the bypass oil passage and causes a working fluid to flow in a direction from an upstream-side oil passage to a downstream-side oil passage of the main oil passage, and wherein the hydraulic valve unit is disposed at a position closer to the slave cylinder than the hydraulic actuator, and the master-side connecting pipeline is formed of a metal-based material, and the slave-side connecting pipeline is formed of a rubber-based material.