M4 - Traffic statistics

[Shaw]

Does anyone have any estimation of the number of cars using M4 per
month? (Eastbound + Westbound)

Regards,

Shaw

[Sam Laybutt]

Latest AADT (Average Annual Daily Traffic) available from RMS is for 2006. You could extrapolate that for an average month, however it would not be particularly useful given the changes over the past 6 years. 

A simple email to RMS should get you more recent information, though. Government Information and Privacy Act 2009 has meant that they now have to give out that sort of information freely.

> Date: Wed, 15 Aug 2012 01:28:08 -0700
> Subject: [Aussie Highways] M4 - Traffic statistics
> From: shaw...@gmail.com
> To: aussie-...@googlegroups.com

[Shaw]

Thank you. I sent the email to RMS as per your comment. Will post
the answer once received.
I could find some figures on the internet for around 100,000 daily
count average in some points. However is not clear if this would be
only west + eastbound, or just one direction.

Rgds,

[Sam Laybutt]

That would be two-way volumes.

> Date: Wed, 15 Aug 2012 02:53:13 -0700
> Subject: [Aussie Highways] Re: M4 - Traffic statistics
> From: shaw...@gmail.com
> To: aussie-...@googlegroups.com
>

[Shaw]

Statistics from TRMS: 139,548 daily average Eastbound + Westbound in
Homebush 2011,

92,424 at HOMEBUSH-AT SALESYARD CHANNEL BR

54,935 at Mulgoa Road
,
Rgds,

[Sam Laybutt]

I'm a little confused mate. Where's the 139,548 vehicles per day?

92,424 vehicles per day at Salesyard Channel bridge (between Hill Road and Silverwater Road) sounds about right for the highest volume anywhere on the motorway to me. Any further east and you've lost Metroad 3 traffic. 

> Date: Thu, 16 Aug 2012 20:27:13 -0700

> Subject: [Aussie Highways] Re: M4 - Traffic statistics
> From: shaw...@gmail.com
> To: aussie-...@googlegroups.com
>

[Shaw]

Detailed file attached. Email received copied below. It just says "Homebush", and yes it is 139,548 cars per day average for the full year.   It would be interesting to understand how the capacity planning is worked out, peaks, per hour, etc. and how it compares to other motorways.  It this is an annual daily average, the cars using the road on normal working day peak hour should be huge.

 Rgds,

 -----

 

Thankyou for contacting the Road Information Strategy and Services team.

 Your reference number is 434

 Please find attached the 2011 Average daily traffic report for M4 with directional breakdown as per your request. Please note that Prescribed direction is Westbound and Counter direction is Eastbound.

  

[Sam Laybutt]

Hi Shaw

If you want to ensure you're using accurate data it might be worth clarifying with RMS what exactly the "M4 Homebush" bit means. I can't understand how there would be a discrepancy of 40,000 vehicles per day between Hill Road and another point on the M4 in Homebush.

A very rough estimation of peak hour volumes is 10% of total daily volume. As I mentioned this is very rough, rule of thumb type stuff, and the accuracy will be affected if there is significant peak spreading (which there is on the M4). 

---

Date: Thu, 16 Aug 2012 22:28:45 -0700
From: shaw...@gmail.com
To: aussie-...@googlegroups.com
Subject: Re: [Aussie Highways] Re: M4 - Traffic statistics

[Shaw]

Thank you Sam, I was just interested on rough figures.
I understand your point, the figures for are quite weird. Perhaps
there's an error in the excel file they sent me (may have changed the
names around). Some figures older figures were around 100,000, so I
guess that the 139,000 may be the actual figures at wherever is the
maximun traffic.

Rgds,