Gojek/OSM Tags for Routing

Under construction, taking inspiration from OSM tags for routing/Telenav

Way types

These are the way types we consider when building our internal graph representation of the OSM data. Note that way types are listed in approximate order of importance.

OSM tag	Car Routing	Pedestrian Routing	Comment
highway=motorway	yes	no
highway=motorway_link	yes	no
highway=trunk	yes	yes
highway=trunk_link	yes	yes
highway=primary	yes	yes
highway=primary_link	yes	yes
highway=secondary	yes	yes
highway=secondary_link	yes	yes
highway=residential	yes	yes
highway=residential_link	yes	yes
highway=service	yes	yes	No through traffic
highway=tertiary	yes	yes
highway=tertiary_link	yes	yes
highway=road	yes	yes
highway=track	yes	yes
highway=unclassified	yes	yes
highway=undefined	yes	yes
highway=unknown	yes	yes
highway=living_street	yes	yes	No through traffic
highway=private	yes	yes	No through traffic
highway=footway	no	yes
highway=pedestrian	no	yes
highway=steps	no	yes
highway=bridleway	no	no
highway=construction	no	no
highway=cycleway	no	no
highway=path	no	no
highway=bus_guideway	no	no
route=ferry	yes	yes

Routing

Turn restrictions

Telenav follows the conventions for Turn Restrictions as described on the OpenStreetMap wiki. We use both 'simple' turn restrictions that follow the way-node-way pattern, as well as 'via' turn restrictions that use the way-way-[...]-way pattern as described on the wiki.

Key	Value
type	restriction
restriction	no_left_turn / no_right_turn / no_u-turn ….

Restriction	Sign	Relation			Description
		From	Via	To
no_right_turn		way	node	way	The restriction doesn’t allow the vehicles to turn right
no_left_turn		way	node	way	The restriction doesn’t allow the vehicles to turn left
no_u_turn		way	way	way	The restriction doesn’t allow the vehicles to make a u-turn
no_straight_on		way	node	way	The restriction doesn’t allow the vehicles to go straight
only_right_turn		way	node	way	The vehicles can only turn right
only_left_turn		way	node	way	The vehicles can only turn left
only_straight_on		way	node	way	The vehicles can only go straight

Barriers

Key	Value	Object
barrier	gate	node/way
barrier	lift_gate	node
barrier	swing_gate	node
barrier	block	node
barrier	jersey_barrier	node/way
barrier	bollard	node/way

For the tagging of barriers, it will be better if completing with the tagging access for vehicles.

Examples:

Key	Value
barrier	gate/lift_gate/swing_gate/bollard/swing_gate/block/jersey_barrier
access	permissive/no/private

Photo	OSM Tags
	barrier=bollard access=no
	barrier=swing_gate swing_gate:type=double access=no
	barrier=jersey_barrier access=no
	barrier=lift_gate access=no
	barrier=block access=no
	barrier=gate access=no

Access for Vehicles

Key	Value	4W Routing	2W Routing	Pedestrian Routing
access	permissive	yes	yes	yes
access	no	no	no	no
access	private	no	no	no
access	destination	yes	yes	yes
access	customers	yes	yes	yes
motorcar	no	no	yes	yes
motorcar	yes	yes	yes	yes
motorcycle	no	yes	no	yes
motorcycle	yes	yes	yes	yes
motor_vehicle	no	no	no	yes
motor_vehicle	yes	yes	yes	yes
motorroad	no	yes	yes	yes
motorroad	yes	yes	no	no

Directions

OSM Tag	4W Routing	2W Routing	Pedestrian Routing	Comment
lanes=*	yes	yes	no	How many traffic lanes there are on a highway. Value fill in with number
name=*	yes	yes	yes	Street name (official). Also official_name / int_name / name:en / nat_name
name_1=*	yes	yes	yes	Street Name (Alternate). Also reg_name / loc_name / old_name
oneway=*	yes	yes	no	Indicate that the way is for one direction by vehicles
*:forward=*	yes	yes	no	Direction in which the way is drawn
*:backward=*	yes	yes	no	Direction in which the opposite of the way drawn

Data Validation

JOSM Validator

JOSM Validator is one of the tools for OSM data quality check, including routing data check. The configuration of the JOSM Validator can be adjusted to only check on data that impacted routing. Some of the checks that can be included are

Type of Check	Description
Suspicious tags combination	To check whether there is a suspicious combination of tags in data. For example, tag motor_vehicle=no together with tag motorcar=yes. Using these 2 tag combinations is contradictory. Moreover, by using these tags together, the route can not be generated by the routing engine (eg. Graphhopper) for 2W and 4W routing since the engine more consider the motor_vehicle=no tag.
Missing tag	Check whether an object has a missing mandatory tag. For example, a restriction relation without restriction=* tag can not be considered by the routing engine as a restriction

Relations

OSM tag	Car Routing	Pedestrian Routing	Comment
type=route			Determine route number / name (see below)

Route Relation Use

Telenav relies on route relations as the primary source for determining the road network and number (I-80, US-6, etcetera), following the conventions set out on the OpenStreetMap wiki page.