Does this sign warn of an intersection with a road on the right without the right of way?

In the photo you are driving on a road outside town; on the right there is a yellow triangular sign with a thick vertical line and a thin branch to the right - A-6b, with plate T-1 "100 m". This sign warns of a junction with a minor road on the right. The answer is: yes.

The Regulation on road signs and signals states that signs A-6a, A-6b and A-6c warn of a junction with a minor road on the side shown on the sign: A-6a on both sides, A-6b on the right, A-6c on the left. The thick line is your road, and the thin branch is the side road, where sign A-7 or B-20 stands. Plate T-1, placed under a warning sign, shows the distance from the sign to the dangerous place - here the junction is 100 m ahead, and not at the typical distance of 150-300 m. The sign tells you that you have right of way, but the Road Traffic Act still requires you to exercise particular caution when approaching a junction: you look to the right to check whether anyone is pulling out of the side road, because a driver on the minor road may not notice you.

Legal basis: § 5 para. 2 and § 3 para. 4 of the Regulation on road signs and signals; Art. 25 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym)