Sign 4 can be combined with sign 2. Sign 2 is a stop sign.

Sign no. 4 is categorized as a supplementary sign to give-way and priority signs. The thick line indicates a priority road, while the thin lines indicate roads where traffic has an obligation to give way (which is marked accordingly with either a stop sign (sign no. 2 above) or a standard give-way sign.

If you are approaching straight on from below (along the road represented by the thin line), you will either see:

a stop sign in combination with the supplementary sign (no. 4), or

a give-way sign in combination with the supplementary sign (no. 4). a give-way sign in combination with the supplementary sign (no. 4).