Various types of roads and road networks that shape the cities

1. ROAD NETWORKS
SHAPES OF PLANS IN ACCORDANCE
TO ROAD NETWORKS

2. INTRODUCTION
• The primary mode of transport from one part to other.
• Divides the landmass into various patterns to provide the best suitable path
between destinations.
• Can be classified in many ways.
• Most common classification is based on speed and accessibility.
• Classifications combine to form a pattern

3. • Expressways
• Arterial Streets
• Sub-Arterial Streets
• Collector’s Streets
• Local Streets
CLASSIFICATION OF URBAN ROADS

4. • For Speedy and heavy traffic.
• Pedestrians not allowed.
• Connect main markets, important places.
• Complete separation of opposite moving traffic by a divider or median.
• Level crossings, sharp curves, steep gradients avoided.
• Telephone facility, Highway Police, Servicing Stations, Refreshment Facility
available at regular intervals.
EXPRESSWAYS

5. • For the heavy/important traffic inside the city.
• Usually along the expressways serving as principal network of traffic flow.
• Join central business district with outside residential areas.
• Parking, loading, unloading prohibited.
• Pedestrians are allowed to cross only at intersections.
ARTERIAL STREETS

6. • Less traffic than arterial streets
• Pedestrians are allowed to cross only at intersections
• Spacing varies from 0.5 km in central business areas to 3 to 5 km in
residential area.
• Parking, loading, unloading usually restricted and controlled
SUB-ARTERIAL STREETS

7. • Meant for collecting the traffic from local streets to arterial streets
• Full access allowed from properties alongside
• Situated in residential, commercial, industrial areas
• Few parking restrictions except for peak hours
COLLECTOR’S STREETS

8. • Open access from residents, business or other properties
• Does not carry large volume of traffic
• Unrestricted parking and pedestrians allowed
LOCAL STREETS

9. URBAN ROAD PATTERNS
VARIOUSTYPES OF ROAD NETWORKS

10. • Streets run at right angles to each other, forming a grid (Grid Iron)
• Typical for cities built after the industrial revolution – emphasis on
economic activity
• Facilitates the movement of people and product throughout the city.
Rectangular/Block Pattern
GRID IRON PATTERN
Advantages
• High accessibility,
• minimum disruption of flow,
• expansion flexibility,
• excellent psychological orientation,
adaptability to level or moderately
rolling terrain.
Disadvantages
• Requires flow hierarchies,
• limited in its adaptability to the
terrain,
• potentially monotonous

11. Eg:- CHANDIGARH

12. • Based on star layout.
• Inner outer ring roads linked by radiating roads.
• Core has the business area.
• Industrial area interspersed within the
residential.
RADIAL NETWORK

13. Eg:- Rajiv Chowk, New Delhi

14. ORGANIC CITY LAYOUT
• Amoebic pattern.
• Roads placed
wherever necessary.
• Lack of acute
pointed angles.
• Parabolic in nature.

15. URBAN ROAD PATTERNS
FUSED ROAD NETWORKS

16. GRID
+
DIAGONAL
Eg:- Broadacre

17. CONCENTRIC + RADIAL

18. GRID
+
IRREGULAR

19. THANKYOU