511 Data Communication and Open511 API

[Nisar]

For the last several months San Francisco Bay Area 511, a program of the Metropolitan Transportation Commmission (MTC), and OpenNorth have been working on a comprehensive data sharing framework for traveler information. This work included both Transit and Traffic travel modes. Sharing of 511 traveler information related data in an open format has become increasingly necessary in order to facilitate application development by third parties as well as streamlining exchange of data among 511 data sources.

While the work is still continuing we thought of publishing a very early version of our work to allow interested parties to take a look at our work early in the process and provide feedback to help us move in the right direction. Attached document is very rough draft of what we have been able to accomplish so far. This draft discusses our approach and contains an Open511 API specification for traffic data. We are currently working on the Open511 API specification for transit and a separate document will be published for that soon.

In this early version we have not been able to spent time on organization, formatting, TOC, etc. Our apologizes to those readers who may be inconvenienced by that. We appreciate your review of this document and any feedback you can provide. Our target is to have the next version ready by first week of February, 2013.

--Nisar

[Craig Gooch]

Nisar,

 

I hope you are enjoying your work – it looks really good.

 

Psomas is implementing a fire response mapping program for Alameda County and we have incorporated the traffic map services – Much appreciated.

 

The legend information for the traffic web map makes no sense to me with the use of 1-5 values.  Is there any movement to clean up the legend information (convert numbers to text and only show a single entry for each traffic class)?

 

Thanks for any information you can provide.

 

 

Craig Gooch
PSOMAS | Balancing the Natural and Built Environment
Vice President
Spatial Technology Solutions
1500 Iowa Avenue, Suite 210
Riverside, CA 92507
Inland Empire Office:  951.787.8421
Direct:  951.300.2803
Mobile: 909.260.6611
www.psomas.com

 

 

 

 

[Nisar Ahmed]

Craig,

 

Good to hear from you. I am definitely enjoying my work on this 511 data exchange efforts.

 

Regarding your question about the traffic map services we actually do not support external use of these services. These services are open and anyone can tap into it but we do not encourage external usage of these services as they may put unknown amount of load on our servers.

 

Your question about the cryptic legend is an example of why these services should not be used by external users. What you are considering as legend values (1 -5) are really congestion attributes of links, and not a published legend.

 

Instead of using our unpublished current traffic map services I would encourage you to consider our newly designed APIs (to be released later this year), responses to which you might be able to process through your GIS engine to derive desired output for your application.

 

Again, good to hear from you.

 

--Nisar

 

Nisar U Ahmed
Program Coordinator

511 Transit & Real Time Transit
Metropolitan Transportation Commission (MTC)
101 Eighth Street
Oakland, CA 94607-4700

510-817-5976 (work)
510-708-0741 (cell)
nah...@mtc.ca.gov

>>> Craig Gooch <cgo...@psomas.com> 9/19/2013 9:21 AM >>>

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