Chennai Traffic Management

[Sundaravelu]

Originally Posted by ferrari_fan

definitely, a big 'thank you' to to Sundaravelu!!

well, to contribute to this thread, here is my somewhat amateurish plan for the Madhya Kailash junction.. please delete it if it is too impractical..

Well, a flyover over MRTS looks impossible so we can have a one way two lane underpass from adayar side to guindy and a two way 4 lane flyover between proposed road and IT corridor. Everything else looks ok but I am afraid that the Gandhi mandapam junction under the flyover will be a bottleneck.

[Sridhar]

Underpass under the Buckingham canal too? The canal crosses Sardar Patel Road at this intersection.

[PlaneMad]

So a subway and flyover is impossible on SP road then. what a mess.

[ferrari_fan]

sorry, i'm pretty clueless about structural facts, but wouldn't a flyover over the MRTS use the same concept as a multi-level flyover? it'd just need a longer ramp to reach the required height, right?

[Naga_Solidus]

As a matter of fact, it would. However, it would also require thicker pillars of higher quality than normal.

In India, it is theoretically possible to build a road flyover over an elevated MRTS line, as far as I know. After all, in Delhi, they built an elevated metro line over an existing flyover, so ferrari_fan's concept is, in theory, the same thing in reverse, only with a tunnel underneath it.

[kannan infratech]

I feel more interest is being shown in the Southern Part of Chennai by the forumers and especially the IT Corridor. In that case, we may take up the South Chennai first.

Reg Madya kailash Junction, Sridhar and myself discussed certain points and a likely diagram which was made earlier was given to him. Let Sridhar work on the same and post it. We can give our positive suggestions to improve on the same.

The basic plan was like this. Since MRTS is already there, Flyover in North - South Direction is the only possibility. It is assumed that the road abutting the Buckingham Canal running from MK Jn to Kotturpuram Station will be broadened and it can take the Flyover. SP Road East West Traffic and OMR to SP Road (Adyar side) will take the underside ways. There will be a clover (in present CLRI KV School land and some area may be under MRTS lines to connect to the LHS of the road coming from Kotturpuram Station) which will be taken by traffic from SP Road to OMR .

The right turn from SP Road to OMR bears the bulk of the traffic now and this will continue till the Mount Road to OMR new road across Adyar ( Nanadanam to Kotturpuram to MK Jn) is formed.

Another temporary alternative suggested through an email by a person who did not identify himself is to have a ONLY RIGHT TURN Fly over from SP Road to OMR and this will also need space from CLRI and redoing the OMR to accomodate this. May not be the right solution.

I should appreciate the email received from a Govt Official from Education Dept, who has suggested that LB Road should be made One way to take traffic from Adyar Jn to Thiruvanmiyur Jn and KB Nagar 3rd Cross - Indra Nagar III Avenue ( Ambika Appalam Depot / Pizza Hut / Domino Pizza) from Thiagaraja Theatre Jn to SP Road Jn in the reverse direction.

He has also suggested to make the Indra Nagar Cycle bridge across Buckiinham Canal to be broadened and OMR traffic which wants to turn right to LB Road opp Tidel Park can take a Right turn only Bridge (to be built) along this opening and reach Indra Nagar III Avenue (near Water Tank Jn) and take the one way to SP Road. He says that Govt already posses the huge road (more than 100 metres I suppose) which is lying unused in this part.

I feel that the Ambika Appalam Depot Jn is not geared to take up such a huge traffic and right turn here into SP Road will be a night mare.

[PlaneMad]

high res http://en.wikipedia.org/wiki/Image:CMDA_masterplan.jpg

There are some proposed alignment changes on mount road and periyar salai by the CMDA. Any idea how they plan to implement the high capicity transit system (mount road) ? an elevated expressway?

[kannan infratech]

Here is the II part with details from South Chennai. Probably we have to number the Junctions or have some abbreviations.

PL ADD ANY INFO, WHICH I HAVE MISSED.

KANNAN INFRATECH - PART II:

SOUTH CHENNAI:

City Borders aka CMDA areas : South of Adyar River upto Tambaram, Sea Front to GST Road ( Both sides of GST Road)

Major Roads:

Inside City Limits:

Sardar patel Road
Mount Road – GST Road (upto Tambaram)
JN Inner Ring Road (from Kathipara Jn to Kasi Theatre bridge)
Mount Poonamalee Road (from Kathipara to Miot Hospital bridge)
Velachery Tambaram Road
OMR upto Sholiganallur
ECR upto Sholinganallur Crossing
Tharamani Velachery Road
Guindy – Mount RS Road – Madippakkam – Kilkattalai
Thorappakkam – Pallikaranai – Chrompet RS Road
Sholiganallur – Medavakkam Road

OUTSIDE CITY LIMITS :

GST Road
OMR
ECR
Kelambakkam Vandalur Road
Thirupporur Chinglepet Road
Inner Ring Road
Outer Ring Road
Pammal – Kundrathur Road
Pallavaram – Thiruneermalai – Thirumudivakkam - Oragadam Road


MAJOR JUNCTIONS :

Inside City Limits:

Kathipara Junction
SP Road – Mount Road – Concord Motors Jn
Guidy Bridge (GST Road) – Race Course Road – Adambakkam Road
MKN Road – GST Road Jn
Guindy Estate – GST Road Junction
Guindy Estate – JN Inner Ring Road – Cipet Jn (Olympia Tech Park) Jn
Malladi Jn, Ekkattu Thangal on JN Inner Ring Road Jn

GST Road – Butt Road
Mt Poonamalle Road – Butt Road

Mount Road – Raj Bhavan Road – Velachery Road Jn
Raj Bhavan Road – SP Road Jn
Kotturpuram Gandhi Mandapam Road – SP Road Jn (Cancer Hospital)
Madya Kailash Jn
Ambika Appalam Depot Jn
LB Road – SP Road – Besant Avenue Jn
Malar Hospital (future Adyar Bank Road from Kottur will join Adyar Bridge Road near here)

Besant Nagar Bus Stand Jn
Mahatma Gandhi Road – Besant Avenue Jn near Velankanni Church
LB Road Adyar Telephones Jn
LB Road – MG Road – Indra Nagar II Avenue Tank Road Jn
LB Road – Indra Nagar III Avenue Jn
Thiruvanmiyur Jn (near Jayanthi Theatre)
LB Road – OMR SRP Tools Jn
Thiruvanmiyur BS Jn (ECR)

Thiruvanmiyur Valmiki Nagar Entrance Jn
Kottivakkam RTO Jn
Palavakkam Anna Road Jn
Neelankarai Kapaleeswarar Nagar Jn
Sholinganallur Link Road Jn

TIDEL Park / Elnet Jn near Thiruvanmiyur MRTS Stn
Ascendas / SERC Road Jn
OMR – Taramani velachery Road Jn
American School – MGR Veeranam Road Jn
Life Line Hospital Jn
Thoraipakkam Kannagi Nagar Entrance Jn
Sholinganallur Jn


GST Road – Pammal Road Jn near Pallavaram RS
Pammal – Kundrathur – Thiruneermalai Y Jn
Chrompet Radha Nagar Mn Road – GST Road Jn
Chrompet Rajendra Prasad Road – GST Road Jn

Tambaram Gandhi Road – SBI Road Jn
GST Road _ Mudichur Road Jn
Gandhi Road – Mudichur Road Jn

Velachery Bye pass Jn
Vijaya Nagar BS Jn
Velachery Tambaram Rd – Madippakkam Road Jn
Pallikkaranai Jn
Medavakkam Jn
Camp Road Jn
Velachery Road – GST Road Jn

[aash]

Does any one have any idea about the road connecting valechery MRTS station to GST road near St.Thomas mount. The sub way for this road got completed 7 years ago and there seems to be no developments after that. This is only 4 to 5 km strech and will help the people from valechery to reach the air port in 15 minutes.

The irony is the road connecting Thoraipakkam to pallawaram is completed except for the ROB and the Velachery to GST Road sub way is done without any connecting road. Both are not serving the purpose for almost a decade now.

[PlaneMad]

just unbeleivable!! Theres houses all along the proposed alignment of the IRR to Velachery.

[Sundaravelu]

Originally Posted by PlaneMad

just unbeleivable!! Theres houses all along the proposed alignment of the IRR to Velachery.

Yes, its old... current scenario is even more bad with more houses. Atleast they should lay the road where there is no encroachment (from OMR junction to ullagaram). Actual encroachment is only between vanuvampet and thillaiganga nagar subway.

Velachery MRTS renderings are good. Does anyone know whether these stations are going to have proper parking space for 2 and 4 wheelers, if not, its going to be another mess with commercial buildings.

It is very sad the think tanks didn't plan for grade separators in IT corridor project. We need grade separators / flyover atleast in the following Junctions

1. MK Junction
2. Thiruvanmiyur junction
3. SRP tools junction
4. Perungudi junction
5. Pallavaram-thoraipakkam road OMR junction
6. Sholinganallur junction

I was thinking about the failure of FOBs in chennai. Its mainly because the existing FOBs are in narrow roads of 4 or less than 4 lane roads and there is a signal nearby FOBs so people are lazy to use the steps. Its definitely attitude issue still if there is two feet divider then people have no other go. Having FOBs in OMR will definitely help people, particularly near stations and it should be weather proof escalators than steps.

[Fusionist]

Can I start off by pointing out the mistake which some of you already have pointyed out about the Kathippara cloverleaf.

The present design converges the traffic from the Airport to ORR and Anna Salai and takes them over the elevated section. On top of that the traffic from Anna Salai towars ORR also joins the elevatesd section meaning at its peak point .. the elevated section will have traffic from 1. Airport to ORR 2. Airport to Anna Salai 3. Anna Salai to ORR. This along with vehicles having to change lanes to take their relevent exit. THis to me is a disaster. The present design even if it has 4 lanes wil not be enough.

What I would suggest instead :

1. Change the Airport - Anna Salai route. It can take a left exit ( along with the traffic from Airport to St Thomas Mt ) which currently is 2 lane ( broaden it to 4 ) and take 3 lanes overhead curving right to rejoin at ground level with the traffic from St Thomas Mt which then goes under the flyover to join Anna Salai.

This decongests the flyover and makes life easy for everybody.

[Naga_Solidus]

The proposed Koyambedu interchange has a similar design what you've suggested, but nobody knows what happened to it. Is it u/c or in limbo?

[ferrari_fan]

land acquisition problems apparently..

btw, is this thread only for road-related issues?

because otherwise i'd just like to say that i feel that in addition to the proposed 2 or 3 metro lines a large network of monorail lines is necessary for areas with less available road space and for routes with lower traffic..

also, i think it's necessary for such a project to be planned right away, because from past experience, it is highly likely that a metro or monorail project will take 7+ years given Chennai's inefficiency in project execution..

it'll be silly to realise the need for a denser network after the metro project is completed and then begin on the monorail then.. instead it makes much better sense to execute them simultaneously..

any thoughts?

[vadi]

ff,

cannot really separate all these nuances. they are all inter-related.
btw i posted similar ideas about course metro grids + finer bus/mono/auto grids under a unified command on another thread.
what is it wise men think alike or fools seldom differ?

[vadi]

guys since you already have a huge list of roads.
is it possible to classify them as
1. transport roads (TR): roads that are major conduits for people travelling from and to different regions.
2. access roads(AR): roads that by themselves are traffic sinks.
3. both transport and access roads. (TAR)

some/many roads will be both.

it will then be possible to layout uniform prescriptions for different types of roads. For example ECR type designs for TARs with pedestrian crossing every 500m.

These will be more trackable. If actual PPHD numbers are not avaialable, as a start one can look at roads on which major grade separation is planned or underway to identify TRs.

I am sure chennai would have a study on PPHD numebrs, it will be great if that is posted here.

[kannan infratech]

Originally Posted by vadi

guys since you already have a huge list of roads.
is it possible to classify them as
1. transport roads (TR): roads that are major conduits for people travelling from and to different regions.
2. access roads(AR): roads that by themselves are traffic sinks.
3. both transport and access roads. (TAR)

some/many roads will be both.

it will then be possible to layout uniform prescriptions for different types of roads. For example ECR type designs for TARs with pedestrian crossing every 500m.

These will be more trackable. If actual PPHD numbers are not avaialable, as a start one can look at roads on which major grade separation is planned or underway to identify TRs.

I am sure chennai would have a study on PPHD numebrs, it will be great if that is posted here.

Please note that Traffic Management includes multi modal transport also. Plese suggest the appropriate areas where bus services / Parking services and rail services should have a common terminal so that change over will be smooth and traffic free. (For eg, Velachery MRTS station should have a bus terminal nearby and a huge parking bay for 2 and 4 wheelers) to cater to South Chennai Suburban population,

What I suggest to our forumers is that please take each junction and analyse the present arrangement and its difficulties. Suggest solutions without new construction as first choice (like making it one way and not allowing right turn etc). if it is not possible, suggest simpler alternatives with new construction as second choice. Even if this is not possible, suggest bigger alternatives like grade separators.

We all must understand that more of our suggestions should be accepted and implemented in the field.

As South Chennai seems liks more popular, I expect constructive contributions for the same in good numbers. Pl co operate and post.

[Fusionist]

sorry out of topic yet relevent, how do I save a google map as an image file ?

[PlaneMad]

I just wish we had a unified transit athourity for buses and trains, I know its difficult to snatch the railways from the iron grip of IR, but this is something that has to be done sooner or later. otherwise we can throw the concept of multi modal transport out the window.

[kannan infratech]

Originally Posted by Fusionist

sorry out of topic yet relevent, how do I save a google map as an image file ?

When you have finalised the part of the image which you have to store,
Go to the File at the left hand top corner
Save the page as image
Give a file name
You can edit and draw once you open the file later.
Very easy and user friendly
If you are really interested, there are advanced versions available with Google (Google Earth Pro), where you can raise your own designed buildings as a 3D image, where ever you require on a google map.