Do you have to exercise particular caution in the presented situation?

Above the motorway there is a gantry with variable message signs: the words "A2 otwarta do Berlina" (A2 open to Berlin) and, above each lane, a red triangle with an exclamation mark, which is the illuminated version of sign A-30 "other danger". Every warning sign imposes a duty to exercise particular caution. The answer is: yes.

The Regulation on road signs and signals says that road signs also exist in the form of illuminated signs, and warning signs require road users to exercise particular caution. The triangle above a lane applies to that lane. On a motorway such a signal usually announces a traffic jam, an accident, roadworks or bad weather further along the route - you increase your following distance, take your foot off the accelerator and watch the next boards.

Legal basis: § 1 para. 3 point 1, § 2 para. 1, § 3 para. 1 and § 11 para. 1 of the Regulation on road signs and signals