JAM DODGE

JAM DODGECrowd Sourced Traffic Monitoring

By Mitchell Cox, Alec Larsen and Benjamin Sim

Overview

Motivation

Demonstration

Iterations

Contributions

Motivation

[1] http://healthylifecarenews.com/wp content/uploads/2011/05/Congestion.jpg

[2] http://thenack.iblog.co.za/files/2009/06/traffic.jpg

[1] [2]

Motivation

=

Screenshots (Android App)

Screenshots (Web Frontend)

Iterations

Two iterations 1st iteration = majority of features

included 2nd iteration = additional features

incorporated. Responsibility shifted between the

two iterations.

First Iteration

Alec

Benji

Mitch

Second IterationAlec

Benji

Mitch

Backend Functionality

Login

Point Logging

Point Retrieval

Does having a login make sense? All data is anonymous to prevent system

abuse Logging in is a hassle – you don’t log into

your GPS

Two distinct login processes: Android login PC/Mobile login

Protection against freeloading

Android Login Simple with no user interaction

Only users logging in from the Android Application will have PC access

PC/Mobile Login

Uses selective redirection based on device: Mobile – Automatic redirection to map

page PC – Requires a valid unique identifier to

gain access to the maps page

PC/Mobile Login

Point Logging

Points passed in via a Query String in the URL

Query string has parameters for: Latitude Longitude Speed Bearing

Points within similar geographic location have speed and bearing averaged

Point Logging (Example)jam-dodge.enox.co.za/LogPoint.php?lat=26.123&lng=28.001&s=2&b=180

This causes the backend to process the point and update or add it to the database

Query string used instead of HTTP POST, for use by simple devices

Flow Chart of Point Logging

Point Retreival

Query string used to get points from backend according to bounds

Appropriate points are returned as a list via AJAX

26.1000 28.0000 90 FF0000 1;

Database

Simple Structure Large Tables

Android App

Simple application: Activates GPS Loads frontend web page Generates unique user ID

Loads from web for future ease of portability

Frontend Web Page

Uses JavaScript with AJAX W3C Geolocation for positioning

Page designed for use on almost any mobile device and on PC’s

Index page is used for description and login

Thank You

http://jam-dodge.enox.co.za