In Colorado, the officer must establish probable cause before they can arrest you
and require you submit to a
chemical test. The most common form of establishing probable cause is through the performance
and evaluation of voluntary roadside maneuvers, also known as Standardized Field
Sobriety Tests. These tests were developed and formulated by the National Highway
Traffic Safety Administration (NHTSA) and have been adopted throughout the country.
These tests are designed to detect impairment due to alcohol consumption.