deletions | additions       diff --git a/Methodology Flow.tex b/Methodology Flow.tex  index ffa80b5..d92d9af 100644  --- a/Methodology Flow.tex  +++ b/Methodology Flow.tex 
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Traffic flow and flow ratios can be obtained by performing counts on these objects according to the context of the specific metric. In this case we collect per-lane per-hour counts over the time of the study. Flow ratio is calculated as follows:  \begin{equation} \label{eqn:flow_ratio} Q_r = Q_{approach}/(Q_{roundabout} \frac{Q_{approach}-Q_{roundabout}}{Q_{roundabout}  + Q_{approach}) Q_{approach}}  \end{equation} where $Q_{roundabout}$ is the count of vehicles entering the weaving zone from within the roundabout and $Q_{approach}$ is the count of vehicles entering the weaving zone from the approach. A low $Q_r < 0.33$ ratio $Q_r$ close to -1  indicates a large traffic flow arriving from a different section of within  the roundabout (users who have priority) with little mixing. A high $Q_r > 0.66$ ratio $Q_r$ close to +1  indicates a large traffic flow arriving from the approach (users who do not have priority) with little mixing. A ratio  $Q_r$ between 0.33 and 0.66 close to 0  indicates an even balance of equal  traffic flow mixing  between the approach and inside within  the roundabout with good mixing. This is more common with low flows, as priority rules tip the balance of flow in favour of those drivers  already in the roundabout at flow approaching  saturation. A polarized flow ratio is a flow ratio less than 0.33 tends towards -1  or greater than 0.66. +1.  \subsubsection{Speed}