What does a white line of triangles on the road indicate?

• The driver should prepare to change lanes.
• The driver must stop behind the line to give way to other vehicles or pedestrians.
  Explanation:

  "A yield line is a solid white line of triangles that shows approaching vehicles where to yield or stop. The triangles point towards approaching vehicles."
• The driver should increase speed and proceed.
• The driver is approaching a school zone.