During prokaryotic transcrption and translation, the ribosome and RNA polymerase play bumper cars. With the RNA polymerase as the lead car, ribosomal tailgating leads to crashing and increases transcription speed – at the expense of accuracy. But, hey, when you’re in a hurry, who’s got time for being precise? Just don’t pause for too long, or you might cause a cellular pile-up.
Find more details in this study from Cell.