Another Test:

Actually we do put them OOS for this. Here's the interpretations that deal with 391.15:

Question 3: Is a driver holding a valid driver’s license from his or her home State but whose privilege to drive in another State has been suspended or revoked, disqualified from driving by §391.15(b)?

Guidance: Yes, the driver would be disqualified from interstate operations until his privileges are restored by the authority that suspended or revoked them, provided the suspension resulted from a driving violation. It is immaterial that he holds a valid license from another State. All licensing actions should be accomplished through the CDLIS or the controlling interstate compact.

Question 10: Is a driver who possesses a valid commercial driver’s license (CDL) issued by their State of residence, but who is suspended by another State for reasons unrelated to the violation of a motor vehicle traffic control law, disqualified from operating a commercial motor vehicle (CMV) in accordance with provisions of the Federal Motor Carrier Safety Regulations?

Guidance: Yes. Currently, both section 383.5, which defines the term disqualification as it applies to drivers required to have a CDL, and section 391.15, which applies to other CMV drivers subject to Federal Motor Carrier Safety Regulations, include the suspension of a person’s license or privilege to drive as an action requiring that person to be disqualified from operating a CMV. Neither of these regulatory provisions limit such suspensions to those imposed by the State where the driver is licensed, nor do these regulations specify the grounds upon which a suspension must be based.


From the OOS Criteria:

DRIVER DISQUALIFICATION​

Driver disqualified. (CDL - 383.51(a)(1) or Non-CDL - 391.15(a)) ​

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Declare driver out-ofservice​

until re-qualification is established.

Here's the definition from 383.5 about disqualifications:

Disqualification means any of the following three actions: (1) The suspension, revocation, or cancellation of a CLP or CDL by the State or jurisdiction of issuance.(2) Any withdrawal of a person's privileges to drive a CMV by a State or other jurisdiction as the result of a violation of State or local law relating to motor vehicle traffic control (other than parking, vehicle weight or vehicle defect violations).(3) A determination by the FMCSA that a person is not qualified to operate a commercial motor vehicle under part 391 of this subchapter.


So in a nutshell, it does not matter what a driver is suspended for, a driving violation, FTA, fail to pay fines, child support etc. If a State/jurisdiction suspends, revokes a driver's license they are disqualified to operate a CMV in interstate commerce.

 

I believe almost all State's are compact State's now. I know my State has reciprocity with 48 State's.