Question 1711 from category Traffic Signs for Israeli license grades B, A, 1, C1, C, D

What is the meaning of the sign?

  1. Portable flashing caution sign situated before a road works.
  2. Portable flashing sign upon leaving an inter-urban road to enter a motorway (freeway).
  3. Portable flashing sign for advertising to drivers.
  4. Portable flashing sign before entering an airport.
Picture for question 1711