Government ministries publish all material intended for the public in Hebrew, with selected material translated into Arabic, English, Russian, and other languages spoken in Israel. There are laws that secure the Arab population's right to receive information in Arabic. Some examples include a portion of the public television channels' productions must be in Arabic or translated into Arabic, safety regulations in working places must be published in Arabic if a significant number of the workers are Arabs, information about medicines or dangerous chemicals must be provided in Arabic, and information regarding elections must be provided in Arabic. The country's laws are published in Hebrew, and eventually English and Arabic translations are published. Publishing the law in Hebrew in the official gazette ("Reshumot") is enough to make it valid. Unavailability of an Arabic translation can be regarded as a legal defense only if the defendant proves he could not understand the meaning of the law in any conceivable way. Following appeals to the Israeli Supreme Court, the use of Arabic on street signs and labels increased dramatically. In response to one of the appeals presented by Arab Israeli organizations, the Supreme Court ruled that although second to Hebrew, Arabic is an official language of the State of Israel, and should be used extensively. Today most highway signage is trilingual (Hebrew, Arabic, and English).