A study of police data found that in the six months after the disaster, crime rose 41% on the eastern shore, while the rate on the city's western side fell. Car theft rose almost 50% in the isolated community, and neighborhood quarrels and complaints rose 300%. Frustration and anger was directed towards the transport services. Visible progress on restoration of the bridge was slow because of the need for extensive underwater surveys of debris and the time required for design of the rebuilding. "The ferry queues did however provide some assistance by providing a forum where people with much in common could vent their frustration." A sociological study described how the physical isolation led to debonding (the setting aside of bonds that constitute the fabric of normal social life). The loss of the Tasman Bridge in Hobart disconnected two parts of the city and had far-reaching effects on the people separated.