Not turning off your turn signal after completing a turn or lane change will most likely:

Question

After completing a turn or lane change, be sure to deactivate your turn signal. Leaving the signal on may make drivers think that you plan to turn again, prompting them to move into your path.

Accepted Answer

Encourage other drivers to pull into your path.

Answer

Keep others from noticing your brake light.

Answer

Reduce your chances of a crash because other drivers will stay clear of your motorcycle.

Answer

Encourage others to follow you too closely.