The Mobile Developer web site as well as FMCSA’s QCMobile and SaferBus web services are currently down. FMCSA IT Support is aware of the issue and is working on a solution to remedy the situation. Once the site returns to service, a  notification will be sent to users who have registered for updates via govdelivery here: User Profile Page.

Email support: FMCSA Technical Support
 

API:

Sorry for the inconvenience.  The API’s and any associated documentation are not available due to a technical issue on our end. We have not established a time frame for restoring functionality.  Once resolved we will notify users through the ‘govdelivery’ distribution.

In the meantime, carrier information is available through our other websites.

Safety Management System (SMS) website: https://ai.fmcsa.dot.gov/SMS/  

Safety And Fitness Electronic Records (SAFER) System website: https://safer.fmcsa.dot.gov/

License and Insurance (L&I) system: https://li-public.fmcsa.dot.gov/

Also, there are several files available here:

MCMIS Data Dissemination Catalog: https://ai.fmcsa.dot.gov/SMS/Tools/Downloads.aspx

 
Regarding our mobile apps:
 

Due to compatibility issues with updates to Apple’s mobile device operating system as well as updates to Android’s OS, FMCSA’s mobile apps, QCMobile and SaferBus, will not operate and are not currently available for download. FMCSA is reviewing the mobile apps to determine the changes necessary to be compatible with current Apple iOS and Android operating systems.

In the meantime, please visit our other websites for motor carrier safety information, searchable by carrier name or DOT number:

Safety Management System (SMS) website: https://ai.fmcsa.dot.gov/SMS/  

Safety And Fitness Electronic Records (SAFER) System website: https://safer.fmcsa.dot.gov/  

License and Insurance (L&I) system: https://li-public.fmcsa.dot.gov/  

MCMIS Data Dissemination Catalog: https://ai.fmcsa.dot.gov/SMS/Tools/Downloads.aspx