Integrated corridor management refers to the government's efforts to improve the travel speed, travel reliability, and travel safety of all travellers by centrally improving the infrastructure of several transportation arteries in the city, public transportation services, or public transportation management. According to the above definition, which of the following is integrated corridor management? ['a city increases penalties for taxi refusal.', 'a city has set up public bicycle rental points on the main roads in urban areas.', 'a city issued a policy to encourage private capital to contract for public transport trunk lines.', 'a city sets a new type of traffic camera at the intersection of urban arterial roads.']