If you are operating in the transportation industry, you are expected to have a USDOT number. Without this number, there is no way you can run a trucking business in the US. After getting your USDOT number, there are other things you need to do from time to time to stay compliant with FMCSA. One of such is the MCS 150 e -filing.

MCS 150 form, also known as Motor Carrier Identification Report, is a filing that updates your USDOT number. Through this form, FMCSA will get precise information about your business. This information could include the number of vehicles in your fleet, your vehicle is designated for (whether passenger carrier or hazardous materials vehicle), and your mileage.

Filing this information makes it easy for FMSCA to authenticate whether the info connected with your USDOT number is accurate. As long as you are a motor carrier and have a DOT number, you must file an MCS 150 form every two years, and that is why it is called the biennial MCS 150 update.
You should file for an update regardless of whether there are changes or not. If you add more trucks to your fleet, change your business name, need to file an MCS 150 update, and your information must be accurate.