Intersection test suite

[[where should this go??]]

In order to systematically test this intersection logic, an intersection test suite was implemented. This test suite goes through several different intersection layouts and tests them one by one if the dynamics behaves according to the specifications. The results typically look like as shown in Fig. . In this particular example, one link with 500veh/sec and one link with 2000veh/sec merge into a link with a capacity of 500veh/sec. The curves are, for different algorithms, time-dependent accumulative vehicle numbers for the two incoming links. In this case, one sees that until approx time-step 3400, both links discharge at rates 400 and 100veh/sec, respectively. After that time, the first link is empty, and the second link now discharges at 500veh/sec. Not all algorithms are similarly faithful in generating the desired dynamics; the thick black lines denote results from the algorithm that got finally implemented. For further details, see (20).

[[there is in fact a 3rd case, see daganzo network cell transmission: outgoing links and ONE incoming link congested, other incoming link not congested. Do we catch that? Do we have to?]]

Figure 33.1: Test suite results for intersection dynamics. The curves show the number of discharging vehicles from two incoming links as explained in section 18.3.