A.800V B.900V C.1000V D.1500V
A.1950V B.2500V C.2200V D.2800V
A.受控司機室尾燈亮,非受控司機室頭燈亮 B.受控司機室頭燈亮,非受控司機室尾燈亮 C.受控司機室頭、尾燈亮,非受控司機室尾燈亮 D.受控司機室頭、尾燈亮,非受控司機室頭、尾燈也亮