PURPOSE: To detect the neutral state of a remotely controlled transmission through a single switch, by providing a recess on a shifting rod and operating the switch with an arm which is fitted in the recess when the transmission is in its neutral position.

CONSTITUTION: A bracket 10 provided with a recess is mounted on a 1-R shifting rod 4. A recess is provided on a 2-3 shifting rod 5. An arm 12, which is rotarably supported on an overdrive shifting rod 6, is fitted in the recesses when a transmission is in its neutral position. The arm 12 operates a switch 13 to generate a neutral state signal. The switch 13 is operated only when the shifting rods 5, 6 are in their neutral position. For that reason, the neutral state can be detected by only one switch 13.