CHAPTER 5. SIMULATION RESULTS
35
High traffic density The sotl-request controller has the lowest ATWT value
(343.94) for θ = 110. For this θ it has also the lowest TWQL (1457). Figure 5.6
on the previous page gives the lowest ATWT values for very low θ or big values
of θ. For θ = 5, the traffic lights are switching very fast because the threshold is
reached immediately. It is more useful to take a bigger θ because the green times
will be longer and the best results are found. The length of the waiting queues is
the lowest (1457) for θ = 110 and the highest (1864) for θ = 50.
Map 1 LD RequestATWT
Figure 5.7: Map1- low density - Request control - ATWT
Low traffic density The best ATWT for the request controller at low traffic
density is given for θ = 50. This gives a value (ATWT) of 30.92 and no waiting
road users in the queues. The highest value is given for θ = 20 with an ATWT of
54.72. (see figure 5.7)