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Old 03-06-2018, 03:04 PM   #91
LittleBigGirl
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Fffffuuuuuuuudggggggeeeeeee. Just saw that video you posted on 12/16/17. Ouch. Yeah, that happened really fast. How fast was he going? Looked like they were both speeding. I have used cars to block me, but I also realize if that car got hit, I'd probably be affected, too.
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Old 02-19-2019, 06:50 PM   #92
WLaryDavis
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Thanks to everyone sharing their thoughts. As a new rider I appreciate what was said here.
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Old 02-20-2019, 08:03 AM   #93
DataDan
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Originally Posted by WLaryDavis View Post
Thanks to everyone sharing their thoughts. As a new rider I appreciate what was said here.
Welcome to BARF.

This is one of my favorite threads for real-world crash prevention knowledge. The kinds of incidents described here really happen. But by taking the extra step of understanding why and learning how to spot the developing situation, you can prevent them.

Case in point: Yesterday, returning from my usual Taco Tuesday stop, I was riding on this two-lane street (Google street view link) in a light industrial area of San Luis Obispo. I was southbound behind a VW camper approaching the intersection in the pic. In that position, it was doubtful that I would be seen by the northbound pickup waiting to turn left. The driver might very well have begun his turn immediately after the VW passed, right into me. So I moved out to the camper's left tire track with a decent following distance. I was in full view, with ample visual separation from the vehicle I was following, so... nothing happened.

A tragic example of obstructed view is described in this BARF thread from 2017. Recent I was reviewing 2017 Bay Area motorcycle deaths in my compilation from NHTSA's traffic fatality database. In this crash, while CHP attributed it to right-of-way violation by the driver, it was also noted that the driver's vision was obscured by the uninvolved vehicle.

To see in real time how quickly a view-obstruction crash unfolds, check out this video. The crash happened here (Google street view link).
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Old 06-29-2020, 03:03 PM   #94
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The A-pillar blind spot

A view obstruction not mentioned in this thread so far is the A-pillar blind spot. An "A pillar" is a car's front roof support. Since today's cars use them for rollover protection, they can be quite substantial--unlike the stylish, pencil-thin posts on a 1962 Chevrolet 409 "bubble top", for example. Next time you're in your car at a stop, move your head around to get an idea of what that structure can block: a pedestrian, bicyclist, motorcyclist, and maybe even a car.

This came to mind today watching the latest DanDanTheFireman video (thx to Budman for bringing him to my attention):


youtu.be/OL8HUu4XrB8

As the white car turns left--a point when the SUV driver should be checking for more traffic--notice that the right A-pillar is directly between the motorcycle and the driver.

Even without the A-pillar factor, situational awareness would trigger elevated attention here; a car attempting to enter your path of travel is always a concern. So, this is just an additional wrinkle that helps predict incursions.

A good countermeasure--but only when far enough out that it wouldn't interfere with a potential emergency maneuver--is the SMIDSY weave (see post #64 of this thread). If you are in the pillar's visual shadow, lateral movement could bring you out of it. Of course, you still cannot count on being seen. Expect an incursion and slow to a speed that will make it easier to avoid--as the rider in the video did.

When I first read about the A-pillar blind spot, I adopted a habit that is still with me: In my car, when checking for cross traffic, I move my head from side to side to see around the pillar.
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