[sustran] Re: BRT - switchover lanes

[Brendan Finn]

Dear Alan, 

I think that's an excellent rule on three grounds : 

1) It is simple and unambiguous

2) The participants always know which situation they are in, and whether they should yield. It is highly visible when a potential yield situation arises, no need for control systems.

3) The priority is to clear the bus stopping place to make room for incoming buses, so it is right that buses leaving the stopping area should have priority.

With best wishes, 


Brendan.
_____________________________________________________________________________________
>From Brendan Finn, ETTS Ltd.   e-mail : etts at indigo.ie   tel : +353.87.2530286
  ----- Original Message ----- 
  From: Alan Howes 
  To: edelman at greenidea.info ; Global 'South' Sustainable Transport 
  Sent: Friday, March 16, 2007 10:52 AM
  Subject: [sustran] Re: (NEWS) Mumbai's BRTS project turns into a joke!


  I thought someone might think that! I take it what concerns you is the (two per stop) conflicts between buses moving in opposite directions? 

  Remember that the buses will be moving slowly as they are about to stop or are just leaving the stop. I don't know offhand what the maximum bus flows are likely to be, but I would not have thought that even in Mumbai there would be more than 120 buses per hour - correct me someone if I'm wrong (I could do a check, but it would take some time). At that level I see no problem with a simple "give way" arrangement (e.g. incoming buses always give way to leaving buses) - you could have traffic signals, but IMO that would be an unnecessary expense. 

  Regards, Alan


  --
  Alan Howes
  Associate Transport Planner
  Colin Buchanan 
  4 St Colme Street
  Edinburgh      EH3 6AA
  Scotland
  email:  alan.howes at cbuchanan.co.uk
  tel:      (0)131 226 4693 (switchboard)
             (0)7952 464335  (mobile)
  fax:     (0)131 220 0232
  www: http://www.cbuchanan.co.uk/


  -----Original Message-----
  From: sustran-discuss-bounces+alan.howes=cbuchanan.co.uk at list.jca.apc.org [mailto:sustran-discuss-bounces+alan.howes=cbuchanan.co.uk at list.jca.apc.org] On Behalf Of Todd Edelman, Green Idea Factory
  Sent: 16 March 2007 10:44
  To: Global 'South' Sustainable Transport
  Subject: [sustran] Re: (NEWS) Mumbai's BRTS project turns into a joke!

  Alan Howes wrote:
  > [...] The problem, however, with with-flow bus lanes placed immediately to the left of the median is that, assuming bus stops are on the median, the bus doors are on the wrong side (an expensive problem to fix). MMRDA explained to me an ingenious proposal for overcoming this - at the stops the buses would swap sides, crossing the median through a gap immediately before and after the stop. This sounds perfectly feasible to me - the only potential problem I foresee is that the necessary gaps will be used (illegally) by other traffic, or even pedestrians (who get a pretty raw deal in terms of getting across the road).
  >   
  That seems really dangerous unless there are electronic safety systems, etc. Am I missing something?

  - T

  -- 

  --------------------------------------------

  Todd Edelman
  Director
  Green Idea Factory

  Korunní 72
  CZ-10100 Praha 10
  Czech Republic

  ++420 605 915 970
  ++420 222 517 832
  Skype: toddedelman

  edelman at greenidea.eu
  http://www.worldcarfree.net/onthetrain

  Green Idea Factory,
  a member of World Carfree Network

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://list.jca.apc.org/public/sustran-discuss/attachments/20070316/860248fd/attachment.html