| http://www.w3.org/ns/prov#value | - transport modes should be used at the outset, especially road and transitway-based bus services, with rail modes being adopted for a corridor only when its demand is expected to reach (say) 5,000 people per hour during peak flows and when the much higher speeds and capacities of heavy rail become important or when constraints such as road congestion prevent buses from fulfilling their transport
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