According to the Federal Motor Carrier Safety Administration (FMCSA), you can use your phone as your electronic logging device (ELD) as long as the requirements are the same as on a dedicated ELD system. That includes syncing up with the engine control module to record engine power and vehicle motion status automatically.
Using a phone as an ELD, you will have your driving data at your fingertips. The ELD app will log all your time working behind and outside the truck. However, it is vital to know that FMCSA has decreed various requirements that qualify a phone, tablet, or other devices as a certified ELD. Installing apps on your phone will not automatically bring it to those requirements.
Under FMCSA, any certified electronic logging device must meet the following performance criteria:
Separately, your phone should be mounted in a set position during commercial motor vehicle operation and visible to you from a normal seated driving position. What if something happens to your phone? If you rely on your phone as your ELD, you must fully understand the consequences of moving the truck if you leave your phone at home or forget a charging cable.
In theory, using your phone as an ELD can track your service hours, but in practice, it may show some vulnerabilities. Smartphones cannot record your truck’s motion activity without an ELD connection. Because your truck’s activity must be recorded continuously, any data gaps in your hours of service are not permitted.
Some of the most common vulnerabilities of using phones as ELD devices are:
As a result, using your phone as your electronic logging device is prone to recording inaccurate data. As you can see, durability, reliability, battery life, and even technical support are only some of the issues that make phones a risky choice when it comes to meeting the FMCSA’s rules. While you can use your phone to track your hours of service, you will also need an electronic logging device physically installed in your truck.