The normal heart rate for a DOT physical usually falls within the range of 60 to 100 beats per minute while at rest. This range is generally considered healthy for adults, reflecting a well-functioning heart. However, it's important to note that acceptable heart rates can vary depending on the individual's overall health, age, and fitness level. Moreover, the Federal Motor Carrier Safety Administration (FMCSA) requires that drivers do not have any cardiovascular disease that can interfere with their ability to operate a vehicle safely. Therefore, if a driver's heart rate is outside the normal range or if there are other signs of potential heart problems, further medical evaluation may be necessary before they can be medically certified for duty.