Final answer:
Carriers should request driver's abstracts typically once a year, but it may differ based on company policy and regulatory requirements to maintain compliance and safety standards.
Step-by-step explanation:
Carriers should request drivers abstracts on a regular basis, typically once a year, but the frequency can vary depending on company policy and regulatory requirements. Some companies may choose to check drivers abstracts more frequently, such as every six months, to ensure ongoing compliance and safety standards. It is important for carriers to stay updated with their local regulations as these abstracts can reveal important information about a driver's history, including any traffic violations, accidents, or license suspensions, which can impact the carrier's insurance rates and legal liability.