The article refers to the northbound Zhuozhou Toll Gate at the G4 motorway just south of the Beijing city boundary.
As you can see on the aerial photography from Google Maps, at this location, the G4 motorway has 8 lanes (4 in each direction):
It is true, but in a very unspectacular way.
The official traffic laws state:
10. The driver is prohibited to:
10.3 participate in road traffic on a vehicle covered with dirt (laminations), limiting the driver's field of vision and also making indiscernible the information on the registration plate at a distance of 40 meters and less
So - ...
Germany is an interesting case to study this, as they have stretches of highway with and without speed limits. In a study done in the state of Brandenburg, the effect of putting a speed limit on stretches of highway has been studied by comparing the accident statistics before and after the new limit.
On two stretches the speed limit was changed from no ...
I know this is long since solved, but I was looking into it a bit.
If you consider an overhead image of the area that was jammed:
You can see that there is far more than 1 car per lane in the plaza. In fact I'm counting 50 cars across which may be where that number came ...
The two quotes say subtly different things. The second quote is much harder to examine, because talking about changes in speed limits without any information on compliance levels is useless.
So I'll tackle the first quote, that risk of fatality halves when vehicle speed is 11.2 m/s (25mph, 40km/h) instead of 13.4 m/s (30mph, 48km/h).
And that's true, at ...
The numbers are, broadly speaking, consistent. The lower number of pedestrian deaths reported for 2013, were from Jan and Feb 2014: that's when you'd expect that number to be provisional, and to under-estimate the total. As 2014 progressed, better data and late returns would have been compiled, leading to a rise in the numbers. So the 183 is probably about ...
It may be difficult to answer this question using statistics. For example, the abstract to the article which rob cites in his answer says,
The most frequent accident type among collisions between cyclists and cars at bicycle crossings was a driver turning right and a bicycle coming from the driver's right along a cycle track.
This type of accident may be ...
Having taken a bicycle safety course, I can attest to part of the syllabus in which they explain why bicycle lanes are less safe than operating as another road user / vehicle operator. As a proponent of these courses, I operated in that manner and have personal experience for both methods. Bicycle lanes are unsafe compared to conventional road operations.
Not much research has been done into this topic, although the statistics published in the State of Idaho Highway Safety Plan, Fiscal Years 1981-1984 where used in an open letter by Jason N. Meggs to argue the following point:
There is no evidence of any long-term change in injury or fatality rates as a result of the adoption of the original Idaho Law in ...
Here is a study made on the effectiveness of HOV Lanes.
Essentially, the study says that:
1. Speed of traffic in a pool lane is reduced by 20% compared to off peak hours.
2. It increases congestion in other lanes, and reduces the speed in those lanes.
3. People who have long term pooling arrangements are not influenced by the time saving factor