2020 New York Laws
VAT - Vehicle and Traffic
Title 7 - Rules of the Road
Article 28 - Turning and Starting and Signals on Stopping and Turning
1163 - Turning Movements and Required Signals.

§ 1163. Turning  movements  and  required signals. (a) No person shall
turn a vehicle at an  intersection  unless  the  vehicle  is  in  proper
position  upon  the roadway as required in section eleven hundred sixty,
or turn a vehicle to enter a private road or driveway, or otherwise turn
a vehicle from a direct course or move right  or  left  upon  a  roadway
unless  and  until  such movement can be made with reasonable safety. No
person shall so turn any vehicle without giving an appropriate signal in
the manner hereinafter provided.
  (b) A signal of intention to turn right or left when required shall be
given continuously during not  less  than  the  last  one  hundred  feet
traveled by the vehicle before turning.
  (c)  No  person shall stop or suddenly decrease the speed of a vehicle
without first giving an appropriate signal in the manner provided herein
to the driver of any vehicle immediately  to  the  rear  when  there  is
opportunity to give such signal.
  (d)  The  signals  provided  for  in section eleven hundred sixty-four
shall be used to indicate an intention to turn, change lanes,  or  start
from  a  parked position and not be flashed on one side only on a parked
or disabled vehicle, or flashed as a courtesy or  "do  pass"  signal  to
operators of other vehicles approaching from the rear.
  (e)  The  driver  of  a  vehicle equipped with simultaneously flashing
signals as provided for  in  subdivision  eighteen-a  of  section  three
hundred  seventy-five shall use such signals when the vehicle is stopped
or disabled on a public highway, except when such vehicle is stopped  in
compliance  with  a  traffic-control  device or when legally parked. The
driver of a vehicle so equipped may use such signals whenever  necessary
to warn the operators of following vehicles of the presence of a traffic
hazard ahead of the signaling vehicle, or to warn the operators of other
vehicles  that  the  signaling  vehicle  may itself constitute a traffic
hazard, taking into account traffic and highway  conditions.  No  person
shall use such signals for any other purpose.