MoRTH Data Collection Summary (1) (2).pptx

Data of roads

1. Impact of Speed Limit on Road Capacity and Safety By Prof. Satish Chandra Professor of Civil Engineering, IIT Roorkee ( Former Director CSIR-CRRI) & Dr. Ch.Ravi Sekhar Chief Scientist & Head TPE Division,CSIR-CRRI Ministry of Road Transport and Highways ( MoRTH ) Date : April 2024 Data Collection Summary Report :

2. Contents of the Presentation Objectives of the Project Literature Review Effect on Capacity Effect On Safety Effect on Fuel Consumption International Practices on Speed Limit Methodology Preliminary Data Collection Future Plan of the Work Budget Details

3. Objectives of the Project To study the effect of speed limit on traffic flow characteristics on a road (urban as well as inter-urban). To study the effect of variable (or different) speed limits on capacity of a road (urban as well as interurban) including the category of the road (number of lanes and type of highway/road). To collect road crash data on selected road sections used for capacity analysis and explore for the correlation between speed on the road and crash rates. Surrogate safety measures can also be used in the absence of road crash data. To suggest guidelines for fixing the speed limits on interurban and urban roads based on the cost-benefit analysis of speed limits.

4. Literature Review- Effect on Capacity Speed Limit Compliance Research consistently shows that higher compliance leads to increased capacity. Weather Conditions Rain and adverse weather can significantly reduce road capacity. Design Speed Smaller design speeds result in greater lateral acceleration and decreased comfort. Variable Speed Limits (VSL) VSL can reduce capacity variance and lower the risk of traffic breakdown. Traffic Conditions Capacity can vary based on traffic volume and congestion levels. Geometric and Control Conditions The presence of variable speed limits can impact capacity distribution . Factors Influencing Road Capacity Speed limits, driver behavior, and weather conditions have a substantial impact on road capacity. Road capacity is a dynamic concept influenced by various factors, requiring a holistic approach to transportation planning and management.

5. Literature Review- Effect on Traffic Safety Speed limits play a crucial role in shaping driver behavior and road safety. International experiences and research findings underscore the importance of setting appropriate speed limits to enhance road safety and reduce crashes and fatalities. Relationship between Speed and Injury Crashes ( Elvik et al., 2019) Effect of speed limit on crash rate (Davis et al., 2015)

6. Literature Review- Effect on Fuel Consumption Various factors, including vehicle characteristics, environmental and traffic conditions, and driving habits, influence fuel consumption. Awareness and strategies to mitigate these factors are essential for improving fuel efficiency and reducing emissions. Relationship between fuel consumption and speed (Nasir et al., 2014) Emission contribution based on categories of vehicle (Sekhar et al., 2021)

7. Speed limits have a rich historical origin and continue to evolve globally. Different countries employ diverse speed limit practices, reflecting their unique transportation needs, safety concerns, and regulatory approaches.. Speed Limits in different Countries (Source: internet) ) International Practices of Speed Limits

8. Methodology Literature Review Identifications of study Sections Urban Inter-Urban Data Collection Speed data analysis Investigate impact of speed l imit on road c apacity and safety Optimization speeds Limits Policy guidelines

9. Data Collection The road should be straight with uniform geometric features (like number of lanes, median There should not be any intersections or direct access from the nearby land uses. Roads that are prone to congestion and high levels of side friction were avoided because the idea was to maintain uninterrupted free flow. The speed of vehicles was measured both near and far from the posted speed limit signs during low volume conditions. Data Collection Procedure Primary Data Collection: Criteria for Selection of the Sites Secondary Data : Accident Data Road Geometry Data

10. Data Collection Locations

11. Locations of Data Collection North: HISAR ( NH-9) North Central India: INDORE (NH-52)

12. South: HYDERABAD ( NH-65) South: VISHAKHAPATNAM ( NH-16) Locations of Data Collection

13. # Section Name Site Location (NH) Type of Carriageway Trap Length Speed Limit Width of Carriageway 1 Kupti Telangana NH-44 4 Lane divided Carriageway 40 m 80 7 m wide 2lane Hard Shoulder - 1.0 m Soft Shoulder - 0.50 m; Straight Section 2 Markal Kamareddy,Telangana NH-44 4 Lane divided Carriageway 40 m 80, 60, 40 7 m wide 2lane Hard Shoulder - 1.0 m Soft Shoulder - 0.50 m; Straight Section 3 Rothak-Hansi - Hisar Road (NH 9) Curve Section 4 Lane divided Carriageway 40 m 30 7 m wide 2lane Hard Shoulder - 1.0 m Soft Shoulder - 0.50 m; Straight Section 4 Bhali Anandpur Rothak (NH 9) Straight Section 4 Lane divided Carriageway 40 m 80 7 m wide 2lane Hard Shoulder - 1.0 m Soft Shoulder - 0.50 m; Straight Section Inter- Urban Intersection Total - 14

14. Kupti Markal Rothak-Hansi - Hisar Road Bhali Anandpur Rothak Glimpses of Study Section

15. # Section Name Site Location (NH) Type of Carriageway Trap Length Speed Limit Width of Carriageway 5 Shipra River Indore (NH-52) Inter Urban NH-52 6LD 30 m 80 Kmph Curve Portion 10.5m with 1.8m paved shoulder 6 Dewas near Rasulpur (NH-52) Inter Urban NH-52 6LD 50 m 80 Kmph Straight Portion 10.5m with 1.5m Paved shoulder 7 Khandwa Road Towards Kaghat (NH-52) Inter Urban NH-52 4LD 40 m 40Kmph 7m with 1.5m paved Shoulder 8 Bhairav Ghat (NH-52) Towards Ganesh Ghat Inter Urban NH-52 4LD 35 m 40Kmph 7m with 1.5m paved Shoulder Inter- Urban Intersection

16. Shipra River Dewas near Rasulpur Khandwa Road Bhairav Ghat Glimpses of Study Section

17. # Section Name Site Location (NH) Type of Carriageway Trap Length Speed Limit Width of Carriageway 9 Nalgonda Vijayawada to Hyderabad NH-65 4 Lane Divided Carriage way 40 m 80 7.5m with 1.5 Hard Shoulder 10 Near Reliance petrol pump, Chityala Hyderabad to Vijayawada NH-65 4 Lane Divided Carriage way 40 m 80 7.5m with 1.5 Hard Shoulder 11 Bondapalli (Agriculture Land) NH-16 2 Lane Undivided Carriageway 40 m 40 10.5 m with 1.5 paved shoulder 12 Gotlam (Agriculture land) NH-16 2 Lane Undivided Carriageway 40 m 40 10 m with 1.5 paved shoulder Inter- Urban Intersection

18. Nalgonda Near Reliance petrol pump, Chityala Bondapalli (Agriculture Land) Gotlam (Agriculture land) Glimpses of Study Section

19. # Section Name Site Location (NH) Type of Carriageway Trap Length Speed Limit Width of Carriageway 13 Tentuli NH 49 Sambalpur to Kheonjhar to 4 Lane Divided Carriage way 40 m 50 7.5m with 1.5 Hard Shoulder 14 Near Kenojhar NH 20 Bhubaneshwar to Kolkata 4 Lane Divided Carriage way 40 m Car 80 HCV 60 7.5m with 1.5 Hard Shoulder Inter- Urban Intersection

20. Glimpses of Study Section NH 49 NH 49 NH 20

21. Urban Sections # Section Name Site Location Type of Carriageway Trap Length Speed Limit Width of Carriageway 1 MR-10 Road, Indore ( towards NH-52) 6LD Urban Section ( towards NH-52) 6LD 30m 40 10.5m 2 Pipliyahana , Indore ( towards Khajrana Mandir ) 6LD Urban Section ( towards Khajrana Mandir ) 6LD 30m 40 10.5m 3 Tagapuvalasa, Vishakhapatnam 4 Lane Divided Carriage way 40 m 40 10.5 m 4 VUDA Park Vishakhapatnam 4 Lane Divided Carriage way 40 m 40 9.5 m width 2m paved shoulder Total - 7

22. MR-10 Road, Indore Pipliyahana , Indore Tagapuvalasa,Visakhapatnam VUDA Park, Visakhapatnam Glimpses of Study Section

23. # Section Name Site Location (NH) Type of Carriageway Trap Length Speed Limit Width of Carriageway 5 Kancharapalem , Visakhapatnam NH-16 ( Urban Section) 4 Lane Divided Carriage way 40 m 60 9 m with 1.5 paved shoulder 6 Yendada , Visakhapatnam NH-16 ( Urban Section) 4 Lane Divided Carriage way 40 m 60 9 m with 1.5 paved shoulder 7 Police Barracks, Vizianagara Urban Arterial Vizianagaram (Urban Section) 4 Lane Divided Carriage way 40 m 40 8.5 m

24. Kancharapalem Yendada Police Barracks Glimpses of Study Section

25. Urban Road Sections City Site Category Lane Land-use Pattern Speed Limit Delhi 1 Arterial 6LD Institutional 50/40 2 Sub-arterial 4LD Residential 50/40 3 Arterial 6LD Residential 30/30 4 Sub-arterial 4LD Commercial 50/40 5 Arterial 6LD Residential 50/40 6 Arterial 6LD Commercial 60/40 Thiruvananthapuram 1 Arterial 4LD Commercial 50 2 Arterial 4LD Residential 40 3 Sub-arterial 2LUD Institutional 50 4 Sub-arterial 2LUD Commercial 40 Visakhapatnam 1 Arterial 4LD Institutional  60 Delhi arterial road Thiruvananthapuram arterial road Vishakhapatnam arterial

26. Future Plan of Work Extraction and Analysis of the data collected in the cities of Delhi, Thiruvananthapuram and Vishakhapatnam as given in this report. Collection of data on inter-urban roads as identified for the study. To observe the impact of speed limit signs on speed violations in the above cities. To collect road crash data on all or some of the cities and correlate the speed violations on a road with road crashes. To identify further sections and collect the traffic data in a few more cities of India for analysis purpose.

27. Thank You