THIS USER ASKED ๐Ÿ‘‡

You must give a signal either by hand and arm or by a signal device:

Anytime you change lanes
Only at night
Only if other traffic is affected by your movement
Only if you are driving a truck or car

THIS IS THE BEST ANSWER ๐Ÿ‘‡

You must give a signal manually and with your hand or with a signal device: Any time you change lanes.