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\chapter{Research Description}  \label{sec:researchdesc}  This chapter presents an overview of the current state of technology on data collection for Vehicular Traffic. The researchers will discuss the various techniques that are currently used on other studies and how significant the research of finding a low cost technique is to aid in traffic data collection within a developing country.   \section{Overview of the Current State of Technology}  \label{sec:overview}  Traffic is defined as (1) the movement(as of vehicles or pedestrians) through an area or along a route (2) congestion of vehicles (3) the passengers or cargo carried by a transportation system (4) the business of transporting passengers or freight (5) the volume of customers visiting a business establishment \cite{Merriam-Webster}.  Road traffic congestion is a recurring problem in central business districts and metropolitan areas which is brought about by daily urban migration from provinces, urban growth and infrastructural constraints \cite{Matthew_2014}. The negative impact of these factors are greatly felt most especially in developing countries \cite{Jain_2012}, such as the Philippines. Similiarly, in other developing countries such as Cairo,Egypt comprising of 19 million inhabitants alone (one-fifth of the country's population), the adverse effects of traffic congestion such as unpredictable commute times, environmental pollution, fuel waste and unproductive hours stuck in traffic are just some of its negative effects. These results to making it an unattractive location for investors to do businesses \cite{nakat_herrera_cherkaoui_2014} proving greater cost in resources such as time and money due to poor road network planning and traffic management \cite{Jain_2012}.   A study conducted by the Portland Business Alliance, Port of Portland and Metro that congestion cost the local economy 6,500 jobs and $844 million a year by 2025, including lost worker productivity, higher transportation costs and lost business earnings. According to an economic report of the Philippines conducted by Japan International Cooperation Agency (JICA) which was tasked by the National Economic Development Authority (NEDA) Board, chaired by President Benigno S. Aquino III, that the present traffic cost of the country is P2.4 billion daily and by 2030 it would likely increase to P6 billion a day \cite{JICA_2014} .\section{Research Objectives}  \label{sec:researchobjectives}  \subsection{General Objective}  \label{sec:generalobjective}  \subsection{Specific Objectives}  \label{sec:specificobjectives}  \begin{enumerate}   \item To find and utilize a low cost but reliable sensor fit to detect traffic density.  \item To practice data cleaning techniques on sensor outputs.  \item To determine a method/s to check the accuracy and reliability of the resulting collected traffic data.  \item To use available techniques/tools in order to determine the best location to place the sensors.  \item To analyze how a network of sensors can generate reliable traffic data for road segment reports.  \end{enumerate}  \section{Scope and Limitations of the Research}  \label{sec:scopelimitations}  \begin{enumerate}   \item Limitations of the sensors in terms of range and susceptibility to environment.  \item The researchers will use a data cleaning techniques fit for the sensor technology to be used with as minimal errors as possible.  \item Comparative tools to check against the data collected from the sensors are limited to Waze, Google Live Traffic and the likes.  \item The researchers are limited to a number of sensors in a certain road segment.  \item Overall road traffic analysis is limited to certain road segments.  \end{enumerate}  \section{Significance of the Research}  \label{sec:significance}