Simplify the following text for a Grade 14 native English-speaking person.
Original: To overcome the confusion caused by this array of numbers , the United States Department of Transportation ( USDOT ) petitioned the Federal Communications Commission ( FCC ) for a national assignment of a single three-digit N11 dialing code .
Simplified: To fix this , the United States Department of Transportation ( called the USDOT ) asked the Federal Communications Commission ( called the FCC ) for a special N11 code .