Los Angeles author David Rensin emailed his curiosity about why, on some streets, the "BUMP" warning before speed bumps now reads "HUMP. For him, and for you, here are some surprisingly extensive city Department of Transportation FAQs on the differences between speed bumps, speed humps and speed tables.

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2:25 PM Fri | Martin Gomez, the head librarian for Los Angeles since 2009, will become vice dean in the USC Libraries on April 2.
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