nz bike helmets and nyc travel times (#23)

* nz bike helmet

* more helmet tweaks, vox travel times

* consistent naming in pdfs

---------

Co-authored-by: robhowley <[email protected]>

_posts/news/2014-09-08-vox-bike-lane-travel-times.md

@@ -0,0 +1,17 @@
+---
+title: Bike lanes have actually sped up car traffic in New York City, Vox
+categories:
+  - In the news
+tags:
+  - Vox
+  - NYC
+---
+
+Narrowing travel lanes and building protected bike lanes both _reduced cyclist risk by roughly half_ and _rush hour car
+travel times declined by 35%_. Removing parking for the "pocket lane" for car left turns is an innovation in the parking
+protected bike lane design that helped with travel times.
+
+#### Source
+
+* [pdf](/images/news/2014-vox-bike-lane-travel-times.pdf)
+* [original link](https://www.vox.com/2014/9/8/6121129/bike-lanes-traffic-new-york)

_posts/safety/2010-10-01-nz-bike-injuries-and-mode.md

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+---
+title: Injuries to pedal cyclists on New Zealand roads, 1988-2007
+categories:
+  - Environment
+  - Safety
+tags:
+  - New Zealand
+---
+
+From 1989 to 2006 New Zealand's _bicycle mode share reduced from 4% to only 1%_. This coincides with a large increase in
+transportation by motor vehicle. During that time the _injury rates for cyclists increased 20%_ while declined by 40-50%
+for all other modes of transportation.
+
+The injury rates per million hours spent traveling by mode of transportation ...
+
+| Mode              | 1988-91 | 2003-07 | % change |
+|:------------------|:-------:|:-------:|:--------:|
+| Cyclists          |  25.61  |  30.74  |  +20.0%  |
+| Car/van driver    |  4.24   |  2.10   |  -50.5%  |
+| Car/van passenger |  5.64   |  2.89   |  -48.8%  |
+| Motorcyclist      | 185.14  | 107.64  |  -41.9%  |
+| Pedestrian        |  4.29   |  2.38   |  -44.5%  |
+
+It is suspected that the "safety in numbers" effect went away as mode share switched from bikes to cars. It is noted
+that the NZ passed an all age mandatory helmet law in 1994.
+
+_Source_: [Evaluation of New Zealand's bicycle helmet law](/images/research/2010-10-nz-bike-injuries.pdf), 2010

_posts/safety/2012-02-01-evaluation-nz-bike-helmet-law.md

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+---
+title: Evaluation of New Zealand's bicycle helmet law
+categories:
+  - Environment
+  - Safety
+tags:
+  - New Zealand
+---
+
+New Zealand made bike helmets required in 1994. Cycling data from 1988-91 and 2003-07 shows that _average hours biked
+per person in NZ declined 51%_ and overall _injury rates per hour biked increased 20%_. There was a _75% reduction
+in biking for children_ 5-17 years old.
+
+Decline in hours cycled data
+
+![nz decline in hours cycled pre/post bike helmet law](/images/img/environment/2012-nz-helmet-hours-cycled.png)
+
+Injury data
+
+![raw injury data pre/post bike helmet law](/images/img/environment/2012-nz-helmet-injury-table.png)
+
+_Source_: [Evaluation of New Zealand's bicycle helmet law](/images/research/2012-02-evaluation-nz-bike-helmet.pdf), 2012