safe-conduct

permission to pass; official immunity

Safe-conduct is the security given by authority of a government or military commander to allow persons to pass unhindered through territories over which the authority has jurisdiction or control. A safe conduct may be given to an enemy to allow retreat under surrender terms or for a meeting to negotiate, or to a stateless person, or to somebody who for some reason would normally not be able to pass.
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Noun
1. a document or escort providing safe passage through a region especially in time of war
(synonym) safeguard
(hypernym) pass, passport

(v. t.)
To conduct safely; to give safe-conduct to.
  

(n.)
That which gives a safe passage
  

(n.)
a writing, pass, or warrant of security, given to a person to enable him to travel with safety.
  

(n.)
a convoy or guard to protect a person in an enemy's country or a foreign country
  

Passage allowed through a territory for peaceful purposes; it was often given to students, merchants, knights on their way to tournament , certain heralds & messengers, and pilgrims. Such safe-conducts could either be issued by the Prince of a region; these were general proclamations that bound the prince’s subjects to respect the passage. The other safe-conducts were offered by individual nobles , issued as sealed guarantees, where the noble himself extended their own protection to the holder of the safe passage. These writs named a specific recipient by name, the number of people in his party allowed to pass, the goods they could carry. Other goods carried were subject to confiscation--this was not an uncommon occurrence. Knights on their way to tournament were frequently given such safe conducts, they are specifically mentioned in several tournament declarations .