SEPTA's not going to allow Regional Rail riders to buy tickets on the train if they're leaving from Philadelphia, the authority said Thursday.

If you're leaving from Temple, Jefferson, Suburban, 30th Street, or University City stations, a ticket collector will check your pass at the top of the stairways at those stations. If you need to buy a ticket, you'll have to do that at the ticket offices before boarding. The new ticketing policy goes into effect Monday.

The change was prompted by the ongoing scheduling crunch created by the loss of SEPTA's Silverliner V cars. SEPTA had received complaints about people getting free rides because conductors didn't have time to check all passengers' tickets on overcrowded trains, said SEPTA spokesman Andrew Busch. Requiring tickets before allowing passengers onto the platform should also speed boarding and get trains out of stations faster, he said.

"What we're looking at overall with this is to just have a more efficient process for the evening rush," he said. "These five stations are the ones that we get the most traffic and by doing this it'll help move things along."

The collection change is temporary, he said.