Road Design Session


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Road Design Session

  1. 1. Road Design Standards Getting there Panel discussion between Praja, CiSTUP, BBMP, BDA
  2. 2. Roads Public infrastructure used by all citizens, without exception Safety, Ease of use, Quick mobility, Aesthetics, Optimal use of space prime considerations. s2 More than just putting asphalt – needs a multidisciplinary, well researched approach, followed by execution taking care of all the details. Central implementation aspect of sustainable transportation
  3. 3. Slide 2 s2 Needs to be reworded suhas, 11/8/2009
  4. 4. Today’ session Roads are improving, but not meeting expectations. What exactly do we want – what is missing ? •As citizen engineers, went through standards and best practices in India and the developed world. •Present what we would like to see to the panel Panel to discuss and analyze what it takes to get there on a consistent basis. Audience can then chip in with their comments/analysis/views. To keep it within time, focus on 3 aspects. Each will run through the above flow. Please raise your comments in the appropriate section only. The three focus areas for today are • Footpaths • Roads (lanes, traffic calming) • Integration of utilities, storm water drains and environmental aspects.
  5. 5. Section-1 Footpath
  6. 6. Footpath: Width IRC says 1.5m unobstructed, at least > 1m 2 1 3
  7. 7. Footpath: Surface quality Even, Firm, Well-drained, Non-slip, Flush joints 1 2 3
  8. 8. Footpath : Access ramps Should be smooth and wheel chair friendly 1 2 3
  9. 9. Footpath : Identity maintained Identity maintained across cross roads 1 3 2
  10. 10. Pedestrian Crossing : Refuge Islands More than 4 lanes, there must be a refuge island 1 2
  11. 11. Footpath – key questions How is it being executed currently ? Do you agree that the above needs to be incorporated ? How is it to be done on a consistent and sustained basis ?
  12. 12. Section-2 Roads
  13. 13. Major roads should be lane based 1. Lanes : Consistency and clarity Consistent lane width should be maintained throughout the length of the road.
  14. 14. 2. Lanes : Turning, Shoulder Turning should not obstruct straight moving traffic 1 2 Throughput of a long channel depends on the width of the narrowest sections. In fact, a channel with changing widths (4-6-4-6 lanes) would actually produce less throughput than a consistent narrow channel (4 lanes all through) because the merges and de-merges would produce unwanted "collisions" at the points where width would change
  15. 15. 3. Lanes : Merge, Demerge Entry and exit from lanes needs to be soft 1 2
  16. 16. 4. Lanes : Conflict minimization 1 2
  17. 17. 5. Lanes : Advantages > will make it safer for vehicles and pedestrians, > smoother/quicker flow of traffic > more pleasant drive
  18. 18. 5. Traffic Calming: Speed Breakers 1 3 4 2 5
  19. 19. 6. Traffic Calming – other methods
  20. 20. Roads – key questions Can we move to roads which are designed for lane based driving ? Research into efficacy and SAFETY of different methods of traffic calming, including speed breaker designs How can the above be incorporated on a consistent and sustained basis ?
  21. 21. Section-3 Integrating Utilities, Storm water drains and environmental aspects
  22. 22. 1. Utility and Trees Placement 1 Adds to rather than subtracts from other functions of the road. 1. Trees, Electric poles should not obstruct the road or footpath 1. Man hole placement should not pose danger 2. Trees under electric lines … etc 2 3
  23. 23. 2. Maintenance issues 1. We often see good roads being dug up for installation of cables etc. 2. The placement and installation be done in a modular manner, such that maintenance is non-disruptive. 3. Co-ordination across multiple agencies is difficult. Also utilities will not have perspective of road users. Is it better that a single agency own all aspects of a road.
  24. 24. 3. Storm Water Drain Issues 1 3 1. Collection – open, no filter, gets clogged 2. Frontages, no place for water to go 3. Open drains become garbage dump Design improvement which is low maintenance ? 2 Possibility of sinking at source ?
  25. 25. Utilities, SWD and summary – key questions Would it be better if all utilities, tree cover and street furniture installation and maintenance are handled by the same agency building roads ? Research into Storm water drain, effective and low maintenance designs Can we develop type designs for roads which are modular, additive. Who is the nodal agency for Bangalore to ensure the standardization and implementation ?
  26. 26. Back up slides
  27. 27. 3. Bus Stops Design: Should not obstruct Information: All necessary info for passengers in a clear manner Placement: Convenience & Minimum traffic disturbance