about me


my software


Yucatán Photos

St Lucia Photos

Photo Album



< January 2010 >
      1 2
3 4 5 6 7 8 9

past articles »

Click for San Francisco, California Forecast

San Francisco, USA


Muni Collision, Truck Driver at Fault

SF Appeal has published the Muni onboard video recording of the collision between a Muni #19 bus and a pickup truck on Jan 5th morning. The intersection is controlled by four way stop sign. Question has been brought about who's at fault. I have reviewed the video frame by frame. I come to a clear conclusion that the truck driver was at fault. While the bus driver technically did not made a complete stop, it has the right of way. The accident was caused by the truck running the stop sign at a high speed.

The four frames below captured the action during a span of 2.8 s until the moment they collided.

  • Frame 1 - 00:02:34.22
  • Frame 2 - 00:02:35.02
  • Frame 3 - 00:02:36.02
  • Frame 4 - 00:02:37.02

At frame 1, using the trash can as a reference point, it shows the bus was right at the intersection. The truck was about half a block away. It should be immediately obvious that the bus has the right of way.

Bus collision video

At frame 2, the bus rolled forward. The truck was still some distance away.

Bus collision video

At frame 3, the bus proceeded across the intersection slowly. The truck still have not arrive at the intersection. It should stop and yield to the bus.

Bus collision video

At frame 4, truck ran the stop sign at high speed and caused the collision.

Bus collision video

Base on the video frames, I plotted the estimated position and the movement of the vehicles during this 2.8 s on a map. I estimated the bus has rolled through the stop at 8 mph. In contrast, the truck has flown through the intersection from half a block away at 32 mph.

Collision map

The verdict is clear, the truck driver was driving recklessly and caused the accident.

San Francisco Chronicle has published an article with the release video titled "Crash video shows bus, pickup ran stop signs". It implies they are equally at fault. I think this is wholly a mischaracterization by failing to unambiguously call out it was the truck's fault. The bus had the right of way. Actually had the bus made a complete stop the same accident could still happen.

2010.01.07 [] - comments



blog comments powered by Disqus

past articles »


BBC News


Many missing as S Korea ferry sinks (16 Apr 2014)


Ukraine troops enter eastern town (16 Apr 2014)


Forensics examined in Pistorius case (16 Apr 2014)


China's 7.4% growth beats forecast (16 Apr 2014)


Mini-sub continues search for plane (16 Apr 2014)


Syria 'torture' photos shown to UN (15 Apr 2014)


NYPD disbands Muslim 'spying' unit (15 Apr 2014)


MPs criticise UK over Afghan attack (15 Apr 2014)


Bid to extend Mid-East peace talks (15 Apr 2014)


EU to back alien species blacklist (16 Apr 2014)

more »


Slashdot News for nerds, stuff that matters


San Francisco's Housing Crisis Explained (2014-04-16T00:03:00Z)


How Apple's CarPlay Could Shore Up the Car Stereo Industry (2014-04-15T23:22:00Z)


52 Million Photos In FBI's Face Recognition Database By Next Year (2014-04-15T22:40:00Z)


Ubisoft Hands Out Nexus 7 Tablets At a Game's Press Event (2014-04-15T21:58:00Z)


How Does Heartbleed Alter the 'Open Source Is Safer' Discussion? (2014-04-15T21:16:00Z)


Lack of US Cybersecurity Across the Electric Grid (2014-04-15T20:35:00Z)


Snowden Used the Linux Distro Designed For Internet Anonymity (2014-04-15T19:42:00Z)


The Security of Popular Programming Languages (2014-04-15T18:59:00Z)

more »


TechPsychic Tech Rumors and Invented News

more »


SF Gate


Bay Area News (7 Jan 2012)


City Insider (11 Feb 2012)


Crime Scene (13 Feb 2012)


C.W Newius Column (10 Jan 2012)


C.W. Nevius Blog (11 Feb 2012)


Education News (10 Jan 2012)


KALW (11 Feb 2012)


Matier and Ross Blog (11 Feb 2012)


Dodge & Cox investment manager taking turn to wild side? (14 Apr 2014)


Le Video survives thanks to partnership with Green Apple Books (14 Apr 2014)


Mozilla names Beard interim CEO after upheaval (14 Apr 2014)


Short positions on tech stocks down to 2.4% of S&P 500 index (14 Apr 2014)


Heartbleed fixes taking longer as websites plug gaps (14 Apr 2014)


Citigroup rises as earnings, revenue top estimates (14 Apr 2014)

more »


Asia Times Online


Asia bucks military spending decline (15 Apr 2014)


Breaking bad in southern NATOstan (15 Apr 2014)


US veterans promote 'right to heal' (15 Apr 2014)


New China-India era no shoo-in under Modi (15 Apr 2014)


Doubts cloud China's urbanization drive (15 Apr 2014)


CREDIT BUBBLE BULLETIN Financial stability (15 Apr 2014)

more »


Site feed Updated: 2014-Apr-16 03:00