Canadian Criminal Evidence/Judicial Notice

General Principles
A Judge accept something as fact thereby exempting the requirement to present evidence to establish the fact where: The improper taking of judicial notice is reviewed as a misapprehension of evidence.
 * 1) the fact is so notorious or generally accepted as not to be the subject of debate among reasonable persons; or
 * 2) the fact is capable of immediate and accurate demonstration by resort to readily accessible sources of indisputable accuracy

Permissible Examples of Judicial Notice
Wikipedia or similar sites to not necessarily contain accurate information to take judicial notice fact.

The judge may access the internet in order to consult with online maps such as Google maps.

Use of the internet by the trial judge to consult commercial information, conduct outside of the courtroom is not appropriate.

A judge may take judicial notice that cell phone was within a general vicinity of a cell tower recording a signal from the phone and that a travel route can be estimated based on the records of several towers. The court may also find as fact that a call from a cell phone is likely to register at the tower closest to the caller without taking expert evidence.

Impermissible Facts of Judicial Notice
It is impermissible to take judicial notice of the following:
 * A person can "only obtain a drug stronger than Extra Strength Tylenol with a prescription".