Running late not only suggests poor time management skills, but shows a lack of respect for the company, the position and even your interviewer.
Go the extra length to make sure that you aren't late, and arrive on time, or even early. Budget your time so that you make it to the interview five to ten minutes early. That way, if something unforeseen comes up on your way over to your interview, you'll have some cushion time.
Next, here's what you shouldn't bring to an interview.
Read more about job interview tips to ace your interview.