Weaving limits the number of lanes of turning traffic. Cambridge bans cycling on certain sections of sidewalk where pedestrian traffic is heavy. Routing is the process of selecting network paths to carry network traffic. It is not open to vehicular traffic or bicycles. The park also uses fingerpost signs for routes suitable for local traffic only. Belgium experiences some of the most congested traffic in Europe. Most international freight traffic is carried by train. This is ideal for networks with limited traffic. There are only two airports with regular passenger traffic. Viewers are able to see global web conditions, malicious attack traffic, and Internet connectivity. They may control entering traffic by stop signs or traffic lights. Union Station serves as the hub for commuter railway traffic. Motorcyclists are at high risk in traffic crashes. Pictograms are standard on all traffic light controlled crossings. The JetRanger is popular with news media for traffic and news reporting.