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Diiferent types of road
- 1. Different types of roads and patterns ABHISHEK DIXIT Assistant Professor
- 2. Depending on weather condition Types of roads • All-weather roads: Negotiable during all weather • Fair- weather : Traffic may be interrupted during monsoon season.
- 3. Depending upon types of road pavement Types of roads • Paved roads • Unpaved roads
- 4. Depending upon types of surfacing Types of roads • Surface roads • Un-surfaced roads
- 5. Nagpur Road Plan/1st road plan Types of roads • National Highways • State Highways • Major District Road • Other District Roads • Village Roads
- 6. Modified classification of Road System by 3rd road development plan Types of roads • Primary System Expressways and National Highways • Secondary System State Highways and Major District Roads • Tertiary system or Rural roads Other District Road and Village Roads
- 7. Classification of Urban Roads 1. Expressways 2. Arterial Streets 3. Sub-Arterial Streets 4. Collector’s Streets 5. Local Streets
- 8. Expressways • 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
- 9. • Heavy Traffic with high speed (120 Km/Hr.) • Land width= 90 m. • Connects major points of traffic generation • Slow moving traffic is not allowed • No loading unloading and parking allowed • Full Access control
- 10. Arterial Streets • 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
- 11. Arterial Streets • Design Speed: 80 km/hr. • Land width= 50-60 m.
- 12. Sub-Arterial Streets • 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
- 13. Sub Arterial Streets • Bus stops but no standing vehicle. • Design Speed: 60 Km/hr. • Land width= 30-40 m.
- 14. Collector’s Streets • 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
- 15. Collector Streets • Design Speed: 50 km/hr. • Land width= 20-30 m.
- 16. Local Streets • Open access from residents, business or other properties. • Does not carry large volume of traffic. • Unrestricted parking and pedestrians allowed
- 17. Local Streets • Design Speed: 30 km/hr. • Land width= 10-20 m.
- 21. Radial (Star) and Block Pattern
- 22. Radial (Star) and Circular Pattern
- 23. Radial (Star) and Grid Pattern
- 26. Sr. No. Point of Comparison Roadways Railways 1 Type of traffic Cars, bikes, trucks, lorries, buses, etc. Goods & passenger trains 2 Width of right of way More Less 3 Tractive resistance More Less 4 Special operational devices Not required Required 5 Rate of accidents More Less 6 Cost of Construction & maintenance Low High 7 Suitability to hilly areas Suitable Not suitable 8 Load carrying capacity Low High 9 Distance of travel Short Long 10 Gradients & curves Steep gradients & sharp curves can be provided Only smooth gradients or curves should be provided 11 Requirement of skilled labour for construction & maintenance Not required Required Comparison between Roadways & Railways: