This document provides information on navigation maps including road network coverage in India, road types, and other transportation features. It details that the maps cover 658 cities in India with road network data on over 22 million km of roads, including 69,825 km of national highways. The maps also include railway coverage of 65,762 km of track. Road types classified include expressways, dual carriageways, roundabouts, and slip roads. Additional information covered includes road class, traffic flow, route numbers, and other transportation layers like railways and waterways.

1. Accurate Navigation Maps
From:

2. Content Detail
City Coverage
• eNav Cities Coverage 658 Cities
• Cities with Dual Carriage317 Cities
India Coverage
• India Road Network 22,11,449 Km
• National Highway Roads69,825 Km
• State Highway Roads90192 Km
• Roads with Standard name32,120 Km
• Route Numbers on Roads154,715 Km
Railway coverage
• Rail Coverage Network 65,762 Km
 Data verified through extensive ground survey
 OEM to MapInfo StreetPro
 Large number of of POIs across 100 categories

3. Road Layer Fields

4. Road Types

5. Road Types
 Expressway
 Dual Carriage
 Single Carriage
 Roundabout
 Major Slip Road
 Parallel Road
 Service Road
 Parking (Entrance to/ Exit from a Car Park)
 Small Slip Road
 Special Traffic Figure
 Pedestrian Zone

6. Expressway
It is a road that has official recognition & which is crossing at a different
level and is connected to the rest of the road network by means of major
slip roads.
•For classifying as an expressway a road should be >= 2 km.
•For < 2km the road would be classified as Dual Carriage way.

7. Dual Carriage
A Dual Carriage is the representation of a road, by means of
splitting two different Carriages due to physical barrier split in two
opposite direction.

8. Dual Carriage

9. Single Carriage
A Single Carriage is a road that has a single lane for the purpose of
transport in both direction without having any barrier in between.

10. Roundabout
Roundabout is a type of circular intersection, a junction in which road traffic flows
in one direction around a central island.

11. Roundabout
For classifying as a roundabout the diameter must be > 5m and <120m

12. Major Slip Road
A major Slip Road is a road that generally connects roads crossing at different levels.
Major Slip Road Multi-level Crossing
Legend

13. Small Slip Road
A Small Slip Road is a road specially designed to ensure a connection between two roads.
This connection is used to leave one road and drive smoothly to the other road particularly
to avoid a crossing at the same level. A small slip road is > 7.5 m and < 120 m.
Small Slip Road

14. Service Road
A Service Road is a local road running parallel to a higher connectivity road.
Service
Road

15. Special Traffic Figure
Special Traffic Figure and Closed Structure of Roads
A Special Traffic Figure refers to a closed circular, elongated or rectangular formation
of roads that is not recognized as a roundabout because:
• one or more roads run through the formation;
• of the direction of traffic flow
Special Traffic Figure Grade Separated Crossing Driving Direction
Road Network Geometry Inaccessible Road

16. Special Traffic Figure
• Delhi – India Gate roundabout

17. Road Class

18. Road Class
 National Highway
 State Highway
 Major District Road
 City Main Road
 Local City Connector
 Locality Connector
 Street
 Local Street (dead end or local street with low importance)
 Rural Paved Road
 Rural Un-Paved Road
 Footpath (unpaved Roads or not to use by vehicles)

19. National Highway and State Highway

20. Major District Roads
Major District Road: which are officially in use & recognized as major connection
between different neighbouring Major District Head Quarters within state or region

21. Other Road Classes
City Main Road: Roads that connect the Main Roads of a town or City.
Local City Connector: Provides the connection between two local cities.
Locality Connector: Provides connections between localities to other localities.
Street: Main road that provides the connection to all local or dead end roads of
a locality.
Dead end Street: All Street and dead end roads.

22. Traffic Flow

23. Traffic Flow
Traffic Flow: is the database representation of the allowed direction of
traffic flow on a road.
Traffic Flow Value
Open in both directions 0
Traffic Flow in the same direction as that of arrow of digitization 1
Traffic flow in the opposite direction as that of arrow of digitization 2
Inaccessible (Closed in both directions for General Vehicles) 3
Arrow of Digitization: - Arrow of digitization is the direction in which the
geometry has been digitized.

24. Traffic Flow
1) Open in Both directions (Data Base Value=0):
2) Traffic Flow is along the arrow of digitization (Data Base Value=1):
3) Traffic flow in the opposite direction as that of arrow of digitization (Data
Base Value=2)

25. Traffic Flow
4) Inaccessible(Data Base Value=3):

26. Section Road Level Crossing

27. Section Road Level Crossing
A Road Level Crossing is the database representation of the relative
spatial position of two consecutive Transportation elements crossing
each other on different level.
Traffic Flow Type Database Value
Ground Level
On Ground Level 0
Road
Above Ground Level Bridges/ Flyover 1
Under Ground Level Tunnel/ Underpass -1

28. Section Route Number

29. Route Number
Route Number generally consists of a prefix (generally alphabetic
characters written in upper cases), a number and, in some cases, a suffix.
• For National Highways - NH and for State Highways - SH. For Example: NH-
6, NH- 48, SH-22 etc.
• Route Number shall be captured as indicated on signposts. Continuity
should is assured. Internal connectors shall have the same Route Numbers
as its corresponding Freeway/Dual Carriageway.

30. Street Name

31. Street Name
A Street Name is an identifying name given to a street or Road which
usually forms a part of the address.

32. Street Name
• Standard Name (SN) - is the most common name of a real-world object.
• Alternate Name (AN) - is an alternative for the most common name for a
real-world object.

33. Speed Restriction

34. Speed Restriction
Expressway: 90Km/ hr
Highway: Urban - 50Km/ hr, Non-Urban - 90Km/ hr
Other Roads: Urban/ Non-Urban – 50 Km/ hr

35. Other Layers

36. Railway Layer

37. Waterway Layer

38. Other Features

39. Other Features
Signpost - Branch Signs identify a specific distination at the end of the ramp and Towards Signs is specific
destination beyond the ramp end.
Ramp - Exit from the main road OR Entrance to the main road from the road of difference level.
Time Related Information (TRI) - Roads are open or Closed for a specific time period.
Blocked Passage - Road closed for all vehicle or a particular vehicle type.
Maximum Dimensions - Maximum Dimension is the largest acceptable limit on road that is generally below the
bridge or over the bridge etc. Like 2.5 m (for Height), 450 T (for Weight) etc.
Rest Areas - A rest area or service area is a public facility, located next to a large thoroughfare such as a
highway, expressway, or freeway at which drivers and passengers can rest, eat, or refuel without exiting on to
secondary roads.
Lane Information - Information on numbers and types of lanes present on any road.

40. Other Features
Maneuver - Maneuver gives the information about the next raod attached to the present road, Like
Restricted, Prohibited, Priority, Implicit etc.
Toll Way - A Toll way is road for which a fee is collected in order to use the road. These are typically
controlled access roads where the fee varies over distance travelled.
Parking - It’s a road element which is the part of parking lot.
Intersection - Intersection is the crossing between 2 or more than 2 roads on the same level.
Freeway Intersection - Intersection is the crossing between 2 or more than 2 roads on the different
level.
Traffic Lights - Traffic Lights gives the instruction for the traffic movement.
Parallel Road - A Parallel Road refers to a parallel road that gives access to one or more level crossing via
major slip roads
Pedestrian Path - A Pedestrian Zone refers to paths, passages, promenades; that are too narrow or
otherwise physically restricted for cars. Walkways can be named or unnamed, paved or unpaved.

41. Process Flow
Area MOD approval Satellite Image
Demarcation for Survey Procurement
DGPS Survey / Field Survey/
Image Data Creation Attribute
Rectification Collection
Data MOD Approval
Quality Check
Integration of Data
Delivery

42. Survey Method – DGPS

43. Survey Method – Camera Drive

44. Thank You!