German traffic law has a Vertrauensgrundsatz, a principle of trust. A driver may rely on other road users to follow the rules. No statute states it in so many words. The courts derive it from Section 1 of the road traffic regulations. A driver with a green light may expect cross traffic to stop at red. The Federal Court of Justice puts the condition plainly. The principle holds solange die sichtbare Verkehrslage zu keiner anderen Beurteilung Anlass gibt, as long as the visible traffic situation gives no reason to judge otherwise. Children, older people and people in need of help are an exception. Toward them, Section 3 of the regulations requires drivers to behave dass eine Gefährdung dieser Verkehrsteilnehmer ausgeschlossen ist, so that any danger to them is ruled out.