Editing Traffic stop (section)

=== Probable cause ===
{{Main|Probable cause}}
Probable cause is the arrest stage in which sufficient evidence is available to sustain a warrant for arrest.  Probable cause is a stronger standard of evidence than a reasonable suspicion, but weaker than what is required to secure a criminal conviction.  In some cases, notably [[Driving under the influence|DUI]] stops, the "sufficient evidence" is used for requiring an evidentiary chemical test (e.g., [[Breathalyzer|evidential breathalyzer test]]) by invoking an [[implied consent]] request.  While state terminology regarding whether evidentiary testing is an "arrest", such testing is constitutionally a "search incident to arrest".<ref name="aba_birchfield">[http://www.abajournal.com/news/article/supreme_court_says_warrantless_blood_tests_incident_to_drunken_driving_arre/" Supreme Court says warrantless blood draws in DUI arrests are unconstitutional], ABA Journal</ref>