tungwaiyip.info

home

about me

links

Blog

< January 2010 >
SuMoTuWeThFrSa
      1 2
3 4 5 6 7 8 9
10111213141516
17181920212223
24252627282930
31      

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

 

Coronavirus: South Korea confirms huge rise in cases (22 Feb 2020)

 

L'Arche founder Jean Vanier sexually abused women - internal report (22 Feb 2020)

 

US election 2020: Sanders 'told of Russian effort to aid his campaign' (22 Feb 2020)

 

Friends to reunite for one-off special on HBO Max (22 Feb 2020)

 

US election 2020: What do young voters want in Nevada? (22 Feb 2020)

 

Elderly wild bear roams California town (22 Feb 2020)

 

US mother arrested in bizarre missing children case (22 Feb 2020)

 

South Sudan rivals Salvaa Kiir and Riek Machar strike unity deal (22 Feb 2020)

 

Ryanair boss criticised for Muslim bomber comments (22 Feb 2020)

 

Wilder v Fury II weigh-in: 'The buzz is phenomenal' (22 Feb 2020)

more »

 

SF Gate

 

Ship traffic, February 23 (22 Feb 2020)

 

Firms encouraged to shift strategy after startup stage (22 Feb 2020)

 

In a Chinese city under lockdown, hope arrives by motorbike (21 Feb 2020)

 

Wells Fargo settles fake account scandal for billion (21 Feb 2020)

 

Stocks sink, Treasurys soar as investors seek safety (21 Feb 2020)

 

New Mexico sues Google over children’s privacy violations (21 Feb 2020)

more »


Site feed Updated: 2020-Feb-22 07:00