Route choice schema

pt_edge

Column name	Description
start_stop	Stop id for the starting vertex.
end_stop	Stop id for the ending vertex.
r_type	Service Line type, can be "BUS", "LRT" or "WALK".
service_line	If the edge is a route segment, it will have the primary bus service line in that route segment. If it is a walking leg, it will have string "Walk".
road_index	Index for road type 0 for BUS, 1 for LRT, 2 for Walk.
stop_link_sequence	The sequence number of the stop at this edge along the service_line.
road_edge_id	Strings of passing road segments by current edge as specified in edge_id. Example:”4/15/35/43”, each number corresponds to a road segment between two adjacent stops along service lines. Road_edge_id containing single “edge_id” are referring to the road segment between two adjacent stops along service lines as specified in R_service_lines. Road_edge_id containing more than 1 “edge_id” are virtual edges representing traversing the edges sequentially without a transfer in between.
r_service_lines	If the edge is a route segment, it will have bus service lines in that route segment. If it is a walking leg, it will have string "Walk".
link_travel_time	Estimated travel time (in seconds) on current edge. If it is a transit leg such as RTS or Bus, it is the estimated in-vehicle travel time on current route segment. If it is a walking leg, it is the estimated walking time on current walking leg.
edge_id	Id for current edge.
wait_time	Estimated waiting time to embark on current edge. Data obtained from scheduled service line information.
walk_time	Estimated walk time in the current edge, estimated based on direct distance and 4km/h walking speed in seconds.
transit_time	Estimated travel time on transit legs for bus and MRT/LRT in seconds.
transfer_penalty	Transfer penalty used to impose penalty on transfers for shortest path searching which assumes path cost is the addition of edge attributes in seconds.
day_transit_time	Estimated transit time for buses and MRT/LRT in day time in seconds. Night bus services will have very large value in this column.
dist	Estimated distance from travel time table in kilometers.

pt_path

Column name	Description
pathset_origin_node	Node id of the path's origin node.
pathset_dest_node	Node id of the path's destination node.
scenario	Contains the algorithm used to generate the path and it's iteration number.
path	Comma separated list of pt_edge ids that make up the path.
path_travel_time_secs	Estimated travel time to traverse the path in seconds.
total_distance_kms	Estimated distance traversed over path in kilometers.
path_size	The degree of overlap for each path within its path set.
total_cost	The computed total cost for traversing this path.
total_in_vehicle_travel_time_secs	Estimated travel time spent in a vehicle in seconds.
total_waiting_time	Estimated travel time spent waiting in seconds.
total_walking_time	Estimated travel time spent walking in seconds.
total_number_of_transfers	Total number of public transport transfers required while traversing this path.
is_min_distance	Indicates that this path is the minimum distance between the two nodes.
is_valid_path	Indicates that this path is valid.
is_shortest_path	Indicates that this path is the shortest between the two nodes.
is_min_in_vehicle_traveltime	Indicates that this path is the minimum in vehicle travel time between the two nodes.
is_min_number_of_transfers	Indicates that this path has the minimum number of public transport transfers between the two nodes.
is_min_walking_distance	Indicates that this path has the minimum walking distance between the two nodes.
is_min_travel_on_mrt	Indicates that this path has the minimum travel on MRT between the two nodes.
is_min_travel_on_bus	Indicates that this path has the minimum travel on Bus between the two nodes.

pt_vertex

This table contains vertices that make up the public transport graph.

Column name	Description
stop_id	Stop id for stops as specified by public transport body. It can bus stops, train stations or SimMobility nodes (Starts with N_).
stop_code	Stop codes for stops specified by public transport body.
stop_name	Name of stop as per public transport body.
stop_lat	Latitude of the stop.
stop_lon	Longitude of the stop.
ezlink_name	EZlinkName of the stop, usually same as stop code.
stop_type	Type of stop, can be '0' for SimMobility nodes, '1' for Bus stops and '2' for MRT/LRT Stations.
stop_desc	Description of stops. Usually street where the stop is located.

pt_od

This table contains a list of origin and destination node ids for which public transit paths are to be generated during pathset generation.

Column name	Description
origin	Path origin node id.
destination	Path destination node id.

pvt_path

Column name	Description
pathset_origin_node	Node id of the path's origin node.
pathset_dest_node	Node id of the path's destination node.
scenario	Contains the algorithm used to generate the path and it's iteration number.
path	Comma separated list of link ids that make up the path.
partial_utility	Travel time independent part of utility.
path_size	The degree of overlap for each path within its path set.
signal_number	Estimate number of signals passed traversing this path.
right_turn_number	Estimated number of right turns taken traversing this path.
length	Estimated total distance covered traversing this path in meters.
highway_distance	Estimated distance traveled on highways traversing this path in meters.
min_distance	Indicates that this path is the minimum distance between the two nodes.
min_signal	Indicates that this path passes the least amount of signals between the two nodes.
min_right_turn	Indicates that this path has the least amount of right turns between the two nodes.
max_highway_usage	Indicates that this path has the most amount of highway usage between the two nodes.
valid_path	Indicates that this path is valid.
shortest_path	Indicates that this path is the shortest between the two nodes.
default_travel_time	Estimated travel time traversing this path in seconds.
min_default_tt	Indicates that this path has the lowest travel time between the two nodes.

pvt_od

This table contains a list of origin and destination node ids for which private transit paths are to be generated during pathset generation.

Column name	Description
origin	Path origin node id.
destination	Path destination node id.

erp_gantry_zone

This table contains a list of ERP gantry zones used in Cordon-based tolling policies.

Column name	Description
Gantry_no	ID of ERP Gantry.
Zone_Id	Zone id of the zone the gantry is located in.

erp_section

This table contains a list of ERP sections used in Cordon-based tolling policies.

Column name	Description
section_id	ID of Section.
link_id	Corresponding link id for section.
ERP_Gantry_No	ID of ERP Gantry in section.
aimsun_id	ID in AIMSUN.

erp_surcharge

This table contains a list of ERP surcharges used in Cordon-based tolling policies.

Column name	Description
Gantry_No	ID of ERP Gantry.
Start_Time	Time of day at which tolling begins in HH:mm:ss.
End _Time	Time of day at which tolling ends in HH:mm:ss.
Rate	Flat tolling rate.
Vehicle_Type_Id	Vehicle type id the toll in applicable to.
Vehicle_Type_Desc	Vehicle description.
Day	Days on which the toll is applicable.

tolling_zones

This table contains a list of tolling zones used in distance-based and/or time-based tolling policies.

Column name	Description
link_id	ID of link in tolling zone.
tolling_zone_id	ID of tolling zone.
tolling_type	Type of tolling zone, can be '0' for Distance Based or '1' for Time Based.

tolling_zone_rates

This table contains a list of tolling zone rates used in distance-based and/or time-based tolling policies.

Column name	Description
tolling_zone_id	ID of tolling zone.
start_time	Time of day at which tolling begins in HH:mm:ss.
end_time	Time of day at which tolling ends in HH:mm:ss.
beta_flat	Flat tolling rate.
beta_dist	Per distance tolling rate.
beta_dist_sq	Per distance2 tolling rate.
upper_bound	Toll rate upper bound.
veh_type_id	Vehicle type id the toll in applicable to.
veh_desc	Vehicle description.