Final answer:
Carrier interventions in the FMCSA CSA program are triggered by a low score in more than one BASIC or scores that exceed thresholds in one or more BASICs, not by a driver receiving a ticket or a randomized drawing.
Step-by-step explanation:
Federal Motor Carrier Safety Administration's (FMCSA) Compliance, Safety, Accountability (CSA) program, specifically focusing on the Behavior Analysis and Safety Improvement Categories (BASICs). According to the CSA program, carrier interventions can be triggered by :
- A low score in more than one BASIC.
- A carrier receiving scores that exceed thresholds in one or more BASICs.
- A driver receiving a ticket can impact the carrier's scores but does not directly trigger an intervention.
- A randomized drawing is used for inspections, but not for interventions.
Therefore, the correct answers are A and B, and the other options do not directly trigger carrier interventions. It's important to note that interventions can range from warning letters to more extensive audits, depending on the severity of the violations and scores.