I have some clarification questions regarding the Jams task.

1. Since a segment is said to be jammed if average speed over the last 6 minutes was lower than 5 km/h and the number of cars that have passed or stay on this segment is larger than 10, does it mean that no jams could happen in the first 6 minutes of each simulation?

2. If road segment A is ONLY connected with road segment B, and road segment B is having road work, what will the vehicles passing A do? Will they stay at the end of A forever, or will they come back from the other direction of A?

3. In the introduction part, it is mentioned that the data cover only major roads that constitute at most 10% of the whole road network. However, based on the average maximum velocity given in street_graph.txt, there are 8631 major roads, which constitute 24.5% of the whole road network. Am I missing anything here?

Thanks a lot!