A. Put your hazard lights on before you turn
A. Put your hazard lights on before you turn
B. Pump the brakes to let the person behind know that you will be slowing down
C. Move to the left and wait until the vehicles behind have overtaken you before turning right
D. Indicate right, but stay as far left as you can
It's sometimes safer to move to the left of the road and wait before you turn right, especially on narrow roads if there's a lot of traffic. It might not be the vehicles immediately behind you that are surprised by you stopping, but vehicles that arrive behind them. This is especially pertinent in the dark where it's slightly more difficult to judge distances.
It does mean that you will need to anticipate where you are going to turn well in advance of the intersection because you will need time to come to a complete stop in a safe place on the left hand side of the road. Try to avoid driving on the verge if you can't see that it is solid. Long grass can hide steep slopes, and if it is wet you could find yourself stuck in mud. Wet grass also has much less friction than tarmac at around 0.2 (a bit less than snow).
If you do decide to turn right and there is traffic behind you, keep an eye on it in your mirror. If traffic doesn't look like it's slowing down, pump your brakes to make the driver behind you aware.