valhalla / valhalla/valhalla

Improve walkway directions within city parks or sidewalks

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Dominant language
C++
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Description

## Issue
Currently, the walkway directions within city parks or sidewalks can be improved at the following decision points:

- forks
- differentiating similar turn angles
- circles

Example routes from [pedestrian_routes.txt](https://github.com/valhalla/valhalla/blob/master/test_requests/pedestrian_routes.txt)
routes 5 & 6: forks, turns, relative direction
![image](https://user-images.githubusercontent.com/7515853/55726348-95f4be80-59dd-11e9-9279-af3481b9b5e5.png)

routes 7 & 8 : circles
![image](https://user-images.githubusercontent.com/7515853/55726512-f552ce80-59dd-11e9-8982-c633d5d4c955.png)

## Tasks

- [ ] Analyze each issue
- [ ] Implement solution to improve
- [ ] Test to verify

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