Search Incident to Arrest: Common Law authority to search for
Weapons/Safety
Evidence
Means of Escape
Search Incident to Investigative Detention: Common Law authority to search for
Safety - pat down only for weapons
Vehicle Search: must be some reasonable prospect of securing evidence of the offence for which the accused was arrested. Establish a nexus between the arrest and the reason for the search of the vehicle
Search the area around were the offender was located in the vehicle. How wide the vicinity depends upon the offence