When may you stop here?

This traffic sign indicates a no-stopping zone on "werktags," which means on weekdays or working days. Therefore, stopping is prohibited from Monday to Friday (excluding public holidays). Since the restriction applies only on weekdays, stopping is allowed on Sundays and public holidays. This is why the correct answers are 1 (On Sundays) and 2 (On public holidays). Saturdays are considered working days unless it is a public holiday, so stopping is generally not allowed on Saturdays with this sign. Understanding the sign's supplementary panel "werktags" helps determine when the no-stopping rule applies.