Three people were taken to the hospital after a two-car crash in Dorchester Saturday night, a fire official said. A Honda SUV could be seen at the scene, which was near Hamilton and Clarkson streets. It had smashed into the front porch of a building bearing a sign for a child care center. It had also taken out a utility pole. A dark-colored BMW sedan was also involved in the crash. Both vehicles had sustained major damage. A district fire chief at the scene said he didn’t know which hospital the injured had been taken to and didn’t know their conditions. No further information was immediately available.