There are multiple definitions - click on the translation that matches your context.
directive means:
Substantiv
partial
noun
In many cases, a directive is not issued by an official or government agency and has been defined as a proclamation serving or intended to guide, govern, or influence. In those cases, the word directive would be a fairly good translation of "Weisung".
a type of legislation passed by the European Parliament and the Council of the European Union and binding on EU member states; the mutually binding collective decision made by the EU member states, acting through their national Government Ministers in the Council of the European Union and the Parliament
The directive must be implemented by EU member states no later than September 2009.
instructions, guidelines, decisions, rules and regulations etc issued by an official body that outline how to perform an action or to reach a target. These may or may not be binding.
The city of Houston issued a directive to conserve energy supplies.