Speed Limits for Philadelphia City Streets?

[Nick Weber]

Hello, I was wondering if anyone knew how to get access to data representing the speed limits of the streets in Philadelphia? If so, could someone please point me in the direction of it?

Thanks a lot,

Nick

[Robert Cheetham]

Nick,

There are potentially two sources for this kind of data.

1) There is a CLASS column in the road centerline file available at http://www.opendataphilly.org/opendata/resource/39/street-centerlines/  This CLASS column contains values from 0 to 18 and can be matched to general speed regulations.  However, this is not ideal.

2) The GIS team at the Streets Dept has a table that lists specific speed limits for segments in the centerline map.  Each segment is uniquely identified by the SEG ID field in the data set listed above.  However, it does not include all segments in the City (I do not know the percentage covered).  The GIS team gets it from the Traffic Engineering group at the Streets Dept.  This data set is not released in OpenDataPhilly, but you could potentially make an open records request and likely receive it.

Best,

Robert

------------------
Robert Cheetham

Azavea  |  340 N 12th St, Ste 402, Philadelphia, PA
chee...@azavea.com  | T 215.701.7713  | F 215.925.2663
Web azavea.com  |  Blog azavea.com/blogs  |  Twitter @rcheetham  and @azavea

Azavea is a B Corporation - we apply geospatial technology to create better communities 

while advancing the state-of-the-art through research. Join us in creating a better world.

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[Nick Weber]

Thank you very much, I think I will pursue option #2.

-Nick

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[Tim Wisniewski]

We'll add this to our list too. Thanks for the suggestion!

On Saturday, 19 July 2014 02:08:34 UTC-4, Nick Weber wrote:

Thank you very much, I think I will pursue option #2.

-Nick

On Fri, Jul 18, 2014 at 7:10 PM, Robert Cheetham <chee...@azavea.com> wrote:

Nick,

There are potentially two sources for this kind of data.

1) There is a CLASS column in the road centerline file available at http://www.opendataphilly.org/opendata/resource/39/street-centerlines/  This CLASS column contains values from 0 to 18 and can be matched to general speed regulations.  However, this is not ideal.

2) The GIS team at the Streets Dept has a table that lists specific speed limits for segments in the centerline map.  Each segment is uniquely identified by the SEG ID field in the data set listed above.  However, it does not include all segments in the City (I do not know the percentage covered).  The GIS team gets it from the Traffic Engineering group at the Streets Dept.  This data set is not released in OpenDataPhilly, but you could potentially make an open records request and likely receive it.

Best,

Robert

------------------
Robert Cheetham

Azavea  |  340 N 12th St, Ste 402, Philadelphia, PA
chee...@azavea.com  | T 215.701.7713  | F 215.925.2663
Web azavea.com  |  Blog azavea.com/blogs  |  Twitter @rcheetham  and @azavea

Azavea is a B Corporation - we apply geospatial technology to create better communities 

while advancing the state-of-the-art through research. Join us in creating a better world.

On Thu, Jul 17, 2014 at 1:43 PM, Nick Weber <wee...@gmail.com> wrote:

Hello, I was wondering if anyone knew how to get access to data representing the speed limits of the streets in Philadelphia? If so, could someone please point me in the direction of it?

Thanks a lot,

Nick

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[Alexandra Ernst]

Hello Robert,

I am working on an access analysis for certified diabetes prevention programs across the state, and specifically in Philadelphia. I currently have a Philadelphia street centerline file that contains the CLASS column and values 0-18. However, I have only been able to find the corresponding categories for classes 1-5 (e.g. 1- Expressways, 2-Major Arterial, etc.). Do you know where I can find the general speed regulations that match these categories?

I have been unsuccessful in trying to acquire data directly from the city. Do you have a specific email address for someone I should contact to obtain the table listing speed limits for the centerline file?

Thank you,

Alexandra

[Robert Cheetham]

Alexandra,

I don't have an email for a specific person responsible for this data, but the Streets Department contact (and every other agency) for an Open Records request is at http://www.phila.gov/privacy/pdfs/FinalCityOpenRecords.pdf

Robert

[Alexandra Ernst]

Thank you, Robert.

[Tim Wisniewski]

Hey Alexandra,

We recently conducted an inventory of datasets in the Streets Department and released the listing at www.phila.gov/data/inventory/ - questions like these are one of the main reasons we've been undergoing these efforts with departments. A quick glance pointed me to this "Speed Limits" dataset, along with a contact email for it, though there may be others that are relevant to your project on there as well.

http://www.phila.gov/data/inventory/#inventory/details/555f7efdad2525653b439177/

Hope that helps!

Tim

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From: opendat...@googlegroups.com <opendat...@googlegroups.com> on behalf of Alexandra Ernst <alexandr...@gmail.com>
Sent: Wednesday, June 17, 2015 16:34
To: opendat...@googlegroups.com
Subject: Re: [OpenDataPhilly] Speed Limits for Philadelphia City Streets?

 

[Robert Cheetham]

Tim:  That's a great application of the inventory.  Thanks.

Alexandra:  I contacted a friend at the Streets Dept and she indicated that there is no comprehensive listing of speed limits, but that the partial one that Tim pointed to would be the best place to start.

Robert

------------------
Robert Cheetham

Azavea  |  340 N 12th St, Ste 402, Philadelphia, PA
chee...@azavea.com  | T 215.701.7713 

Web azavea.com  |  Blog azavea.com/blogs  |  Twitter @rcheetham  and @azavea

Azavea is a B Corporation - we apply geospatial technology for civic and social impact

while advancing the state-of-the-art through research. Join us.