<P> Laws and regulations regarding how drivers must comply with a stop sign vary by jurisdiction . In the United States and Canada, these rules are set and enforced at the state or provincial level . At a junction where two or more traffic directions are controlled by stop signs, generally the driver who arrives and stops first continues first . If two or three drivers in different directions stop simultaneously at a junction controlled by stop signs, generally the drivers on the left must yield the right - of - way to the driver on the far right . </P> <P> In all countries, the driver must come to a complete stop before entering a stop - controlled intersection, even if no other vehicle or pedestrian is visible . If a stop line is marked on the pavement, they must stop before crossing the line . </P> <P> However, some drivers slow but don't come to a complete stop . This maneuver is called a rolling stop or nicknamed after a city or region regarded as somewhere it is commonplace (e.g., "Rhode Island roll" or "California stop")--slowing down significantly but not stopping completely at the sign . This partial stop is not acceptable to most law enforcement officials, and can result in a traffic citation . </P> <P> In some jurisdictions, most notably Idaho, the traffic code allows for cyclists approaching a stop sign to slow to a "reasonable speed" and yield to conflicting traffic, but does not mandate a full stop unless "required for safety". This is commonly known as an "Idaho stop" or "stop - as - yield". The Idaho law has been in effect since 1982 and has not been shown to be detrimental to safety . Cyclist advocacy groups have sought similar laws for other jurisdictions in the United States . </P>

Where did the term california stop come from
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