Route congestion price
= Route congestion price
{title2=$p_r=(A^T\mu)_r$}
The total price seen by a route is the sum of <resource congestion prices> on its links. With <weighted logarithmic utility> $w_r\log x_r$, maximizing utility minus linear expenditure gives the demand $x_r=w_r/p_r$. This relation links user decisions to <multiplicative resource-price dynamics>.