New Pedestrian Subways - Utility issues

A little more detailed pros/cons analysis of ped underpass vs skywalk should help. May be BBMP got some study/analysis done to compare the two.

About plans for ad supported skywalks, are they impacted by the ban on outdorr advertising or something similar announced recently by BBMP?

One problem with skywalk is - you need a certain minimum height (16 -18 feet?) to allow vehicles to pass under it. Ped underpass would require relatively less climbing (when you come out of it), so these would be more convenient for peds. Even if you go for elevator equipped skywalk (which was the plan last time we heard about it), they will be complicated to install and maintain on the bridge, footprint may be a lot larger than what you will need to install elevator in the underbridge.

Not supporting one over another, but wanted to understand the two. We may be able to get the cost equation as well if we can see the tenders etc for both.

If you ask my preference, my question is more basic? Why can't we implement signals and enforce zebra crossings to have pedestrians cross roads on level? That's the cheapest solution in most cases. I would rather use the money saved to even and widen the pavements.

submitted by ssheragu

I have always maintained that pedestrian subways are definitely better than sky walks because of the tediousness of climbing. Pedestrian subways shuld have gradually slooing ramps for entry & exit

Advertisement driven skywalks should be reserved for tourist spots or a few important places and should always be provided with escalator service

silkboard's observation that both can be done away with and signals with zebra crossings can bee provided is not acceptable, as it will lead to traffic jams

Srinath Heragu

I have stopped being amazed at the number of people thinking subways or foot-bridges can solve traffic snarls and problems. I request people to pause and dwell over budgets and amount of money such projects need. We talk of having escalators on our roads in open settings (without bothering to think what will happen to them given our weather - in 70s Bombay Chowpaty had one, eventually it got rusted and was removed). Theoritcally, one may want this at every major junction in a given city - is that realistically possible? How many western developed cities have these skywalks, subways and foot bridges? The answer most will agree is 'hardly any'. These are not solutions that are as simple as buying 'lollies' and its time we stop talking about them at the drop of the hat. But it's not just about costs - how many subways (other than expressways/motorways/freeways) solve the problem completely? Without lifts, disabled will still need to use the road to cross over. Only yesterday, Pune's JM Road subway was in news - reason being built at a cost, it is hardly used - most pedestrians suggested access to it was not good and it took them longer (if vehicle owners think signals cause delays and jams, its only reasonable to accept that pedestrians will also be euqally entitled to be in a hurry). One only needs to visit Mumbai's Churchgate and CST rail stations. Minute after minute, millions enter and leave - most use subways, but has that stopped people crossing at the signal controlled zebras on roads? NO. In fact without lifts and escalators, the diabled are discriminated against (totally un-constitutional).

Do Signal crossings and zebra's cause traffic jams? This is a myth. If anything they ensure traffic has evened out gaps. One has to see this to appreciate this. ONly recently I was at Picadilly, London. As busy as one can get anywhere, yet every vehicle stopped at the zebra (AND THERE WAS NO SIGNAL) - result - instead of 200 cars suddenly appearing at the junction beyond the zebra, at any point in time there were only 2 dozen or so.

There are a number of types of signal crossings which when used with signal syncronisation can improve efficacy remarkably.

One option is to use staggered signal controlled crossing - see this link for a diagram - http://www.accessco de.info/external /5_9c.htm

1. This way, traffic flows until pedestrians arrive to cross and push a button for signals to change.
2. The staggered  design also means, pedestrians have a safe place to wait in between two roads.
3. The staggered design also means that pedestrians cross half the road at a time, effectively, vehicles have to wait for only half the time (as against when there is a zebra across full stretch of the road where traffic from both ends has to stop at same time).
4. The staggered design also is better than a small gap between dividers for crossing - this is abused by cyclists and two wheelers who go through the gap. While using the basic principles, of the design shown in the above link, one can reduce width and change angles such that a motorbike cannot go across the Z shape of the staggered crossings.

But the signals themselves should be synchronised and triggered by sensors under the asphalt (vehicle actuated signals and not timer actuated signals - this I believe is being considered already as far as I remember from another post).

Silkboard is right, this money is better spent on wider sidewalks and other walk to school programmes.

 

 

exactly.... we dont have long haul roads. our arterials are all fronted. our arteries one hand function as a sub-artery and on the other take loads of a classical artery. we think of our arterials as classical sub-arterials. but the arterials, which we think of as sub arterials, are actually funcationally taking the loads of classical arterials. classical designs not possible, in the interim. converting our arterials to classical arteries more expensive than magic boxes. hmmm, hold on, stop the car, i want to get off this artery theory, atleast want to look around and deeper for a while... i wrote all this based on my experience, then for the first time looked up london. eerily similar to bangalore other than obvious differences like the tube and mayor of london prolly packs a meaner punch than mayor of blr. but check out london. big halli only it is when compared american standards, where third tier towns stick to artery theory. all access controlled roads out of what seems to be an equivalent of our own ORR. but they have some amrikan style intersection designs alright. very very very interesting.
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IDS, you will have to show up. If 5-6 more folks willing to be analytical not merely critical can come along, lets push for this "traffic model" project.

Rithesh and I will write to Mr Sood to get time on his calendar. It'd most likely be a 2 pm slot on a Saturday.

On road zebra crossings etc sound good but the reality in blr now is that people are in such a hurry that even stop signals are un headed..this happens at many places..infront of manipal hospital for example..even with cops around..

on the other hand..the ped underpasses in majestic are the most used and the ones at the city market are the least used! (did you guys know there was a ped underpass at market?)..again whats the issue?

enforcement! 

I cancelled a trip this weekend. Can we meet to kick start the initiative? Let me know where to show up. 

I can host it at my place if there are less than 10 people.  

Cubbon Road makes sense as Mr. Sood has already kicked off something on that road.  However the biggest drawback of starting with Cubbon Road is that hardly any pedestrians use that road.  How many have you seen walking along the pavements there? 

Residency Road is a good candidate. Inspite of being made a one-way, traffic crawls.  People jump lights at Cash Pharmacy as though they are colour blind (BMTC buses lead the way).  It is a school zone and children need to cross the roads there without risk to life and limb.  It is wide enough between Cash Pharmacy and Ashirvadam Circle to allow smooth flow.  It then narrows near Imperial and then narrows down all the way till Mayo Hall.  Lots of chaos at Mayo Hall due to Metro construction as well.

A good area will be around Vidhana Soudha itself.  The seat of the government and right around it  no regard for the law!

Srivathsa

Just wondering what about this subway which kick started this thread? Should we intervene on this one?

ASJ