[pgrouting-users] Fixed distance routes

Ravi Kumar ravivundavalli48 at yahoo.com
Fri Nov 1 22:18:30 PDT 2013

Need a way (sql) for fixed distance network from a node / point on the network.

1. Have a roadnetwork (working) for a small city.
2. Need to create (another result network) of a fixed distance Ex 3 km, from (a) points on the roadnetwork.

Usage scenario:
Ambulances may be parked at points that can reach any point in the city within '5 minutes', the time taken for reaction and travelling -3km-.
Depending on the, 'resulting roadnetwork', ambulances will be advised to park is specific locations.
Similar logic works for Police Patrol cars, Fire-trucks and any emergency responce.
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