the cameras in question are at two intersections: mallory and farwa and mallory and blako. the yellow light timing was off. they were supposed to be yellow for 4.7 seconds but were only staying yellow for 4 secs. the public works director initially told's student that interns were responsible for the discentancey and now the city is admittingiate made a mistake. >> for -- the city is admitting it made a mistake. >> for them to say it didn't happen shows it as a rogue operation. anyone can see that if the number of tickets are jumping by a factor of 5 to 10, it should raise an alarm. there is no quality control or supervision. >> the city is promising to refunded tickets to nearly 1,000 drivers. >>> and speaking of traffic, the wall street journal reporting that google is expanding the ways carpooling service to the cities the next few months. the company tested carpooling in san francisco and tel aviv. it matches the riders heading in the same direction. >>> and looking at the financial markets, the dow jones is up 48 points at this hour. >>> and to the sierra now where ski