Speed Surveys

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Dear Birmingham City Council,

On 40mph limit roads in the county that have had their speed limit reduced
to 30mph in the last decade when speed surveys have been conducted before
and after the limit has been changed, please tell me what was for each road the
following before and after?

The 85th percentile speed
The 95th percentile speed
The average speed
and overall levels of compliance with the speed limit

Yours faithfully,

A. Hosking

Birmingham City Council

 
 
 
 
Information request
Our reference: 19673986
Your reference: [FOI #709644 email]

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Birmingham City Council

1 Attachment

 
 
 
 
Information request
Our reference: 19673986
Your reference: [FOI #709644 email]

show quoted sections

Dear Birmingham City Council,

Are you really suggesting that not a single road that had it's speed limit dropped from 40 to 30mph had speed surveys conducted either before or after? How do you then know if the guidelines have been followed or even if speeds went down?
The reason why I ask is because when I asked Warwickshire they sent me data from one road that showed speeds went up after the limit was dropped.

Yours sincerely,

Alex Hosking

Dear Birmingham City Council,

Sorry can you confirm that you don't have any actual speed data to backup the effects of speed limit changes?

Yours sincerely,

Alex Hosking

Birmingham City Council

Dear Alex,
Sincere apologies for the delay in getting this information to you,
 
I have contacted the team again who have advised that they are working on
this as we speak.
 
I will send the information to you as soon as I have it which should be by
the end of this week (18 Jan 21).
 
Once again, please accept my apologies for the delay.
 
Regards,
Leigh

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Dear Birmingham City Council,

Sorry can you confirm that you don't have any actual speed data to backup
the effects of speed limit changes?

Yours sincerely,

Alex Hosking

show quoted sections

Birmingham City Council

1 Attachment

Dear Alex,
Please accept my apologies for the delay in getting this information to
you.

The attached spreadsheet provides a breakdown of speed surveys on roads
where we've changed the speed limit from 40 mph to 30 mph in Birmingham
over the last ten years.

There is only one road identified where we have both 'before' and 'after'
surveys as it would appear that we do not carry out speed surveys when we
change the speed limit on a road. Where N/A has been marked against the
survey, it has been identified that the information is not available, i.e.
no survey exists on our system. 

Please note that we do not have any traffic survey data prior to 2012 on
our system and also do not hold any information in regard to the 95th
percentile speed.

Finally, we do not hold any information in regard to compliance levels.
This is considered to be a matter for the Police.

Yours sincerely,

Leigh Mornington

 

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Dear Birmingham City Council,

Sorry can you confirm that you don't have any actual speed data to backup
the effects of speed limit changes?

Yours sincerely,

Alex Hosking

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