Sunday, 7 June 2015

Rail patronage stats: Opal and Parkling Levy Implications

The Bureau of Transit Statistics last month released it's latest train travel stats package.  The headline conclusion from TfNSW's media release was that March 2015 overcrowding had been reduced despite an additional 6 million journeys to 310 million.  However, more interesting was the data on station barrier counts, which provides a more fine grain picture of on/off boardings at each station.  Unfortunately, this data is only available for 2013 (predating the introduction of Opal).

1.  Daily patronage statistics
The 2013 data shows a bit over 1.066 million NSW rail journeys per weekday.  To put this into context, the Hong Kong MTR, one of the busiest rail networks, has a daily patronage of 4.5 million for a city of 7 million (about one third larger than Greater Sydney/Central Coast/Newcastle/Wollongong).  However, HK MTR likely has an average journey distance of only half that of the 17km per journey average of Sydney Trains/NSW Trainlink, so in terms to total passenger kilometres, Sydney and it's peripheral cities comes much  closer to about half that of the MTR.  This is a pretty good outcome considering the greater car mode share in Sydney and it's peak hour commuter dominance versus the all day use seen in the MTR.

2. Peak hour statistics
The 3.5 hour AM peak (6am to 9:30am) accounts for about 33% of all journeys, the 3.5 hour afternoon peak (3pm to 3:30pm) and the 5 hour interpeak period 22%.  At the granularity of these 3-5 hour blocks, there is actually a well rounded day time distribution, and it is only in the final 7.5 hours of the evening that patronage drops right off to just 13%.  In contrast, my own personal experience of Hong Kong's MTR is that it is busy until very late into the evening, and this probably adds substantially to it's daily patronage.

Table 24 - Trip proportions by period of day
Period %
AM peak (before 09:30) 33.0%
Interpeak (09:30 to 15:00) 21.8%
PM peak (15:00 to 18:30) 32.5%
Evening off peak (18:30 to 02:00) 12.7%
Total 100.0%

It is apparent then that despite low patronage during the evening hours, there is overall a good balance of patronage in terms of peak versus daytime interpeak.  But as will be seen below, the problem is is maldistribution within the AM peak.

The 2012 NSW State Infrastructure Strategy placed a lot of emphasis on demand management (a fancy term for charging higher fares during busy periods) as a way to better address the peak hour capacity limitations of the rail system.  The subsequent introduction of Opal addresses this partially by offering discounts for travel outside the hours of 7am-9am and 4pm-6:30pm.  However, as seen in the next table, it doesn't address the most acute capacity problem, which is too much demand in the 8am-9am period, with significant spare capacity in the 7am-8am and in the 9am-9:30am shoulders:

Table 28- Sydney CBD station exits (AM peak 3.5 hours)
Station Station exits

6:00 to 7:00 7:00 to 8:00 8:00 to 9:00 9:00 to 9:30 6:00 to 9:30 Total
Town Hall 3,029 8,652 23,479 6,428 41,588
Central 3,538 8,777 21,222 6,742 40,279
Wynyard 2,402 8,687 22,389 5,074 38,552
Martin Place 889 3,049 7,989 1,784 13,711
Redfern 790 2,221 5,551 1,486 10,048
Circular Quay 746 1,581 4,334 1,520 8,181
Museum 370 1,334 3,145 979 5,828
St James 420 1,145 2,771 805 5,141
Total CBD 12,184 35,446 90,880 24,818 163,328

Taking into account the average rail journey time of 28 minutes, I believe Opal should restrict it's AM peak hour pricing to the hours of 7:15am to 8:45am only, so as to provide greater incentives for journeys that result in CBD station exits in the 7am-8am or 9am-9:30am shoulders, where capacity utilisation (as measured by CBD station exits) is only 40-50% that of the 8am-9am peak hour.  Basically, this data indicates Sydney Trains can solve it's capacity problems by convincing people to shift their morning journeys by 30-60mins.

3.  CBD Interchange
It is also interesting to note that 20% of all journeys are through the CBD that don't result in a CBD exit (ie: look at the ratio of CBD station exits to "Up CBD" passengers in the table below).  This would be passengers interchanging onto other lines in the CBD and then travelling out of the CBD in the second leg of their journey.  This reflects Sydney's radial network design and relative lack of circumferential connections.


AM Peak (06:00-09:30)3 Sydney Trains NSW TrainLink Intercity Total
Station entries 325,037 21,578 346,615
Station exits 323,450 8,164 331,614
Up (towards city) passengers at CBD/Intercity cordon4 201,232 17,310 218,541
CBD station exits 163,328


4. Rail mode share by Major Centre
The CBD, North Sydney, Chatswood, St Leonards, Bondi Junction and Parramatta all have very reasonable rail mode share of journeys to work, of 28-49%.  The major laggards are Macquarie Park and Sydney Airport which have rail mode shares of only 14-15% despite high job densities of the order of 44K and 27K jobs respectively - vastly more than the minor laggards of Penrith, Liverpool and Bankstown, which have significantly lower job densities.  Interestingly, the high achievers have all been subjected to the Parking Space Levy, which commenced in 1992 and therefore omitted including Macquarie Park and Sydney Airport (which at the time did not have railway stations).  Given congestion on the arterial roads around Macquarie Park, at a minimum the Parking Space Levy should be extended to the Macquarie Park corridor.  Given the 800,000sqm of office floor space and 1:25-1:50sqm parking ratios, this could raise of the order of $20m per annum.



Including
‘walk only’
Centre Train share Trips by all modes
Sydney CBD 49% 252,110
North Sydney 47% 41,534
Redfern-Central Sydney 39% 4,794
Chatswood 35% 15,594
Education and Health Precinct - Central Sydney 35% 23,016
City East - Central Sydney 33% 22,647
Bondi Junction 32% 9,184
St Leonards Office Cluster 29% 25,536
Burwood 28% 8,875
Parramatta 28% 38,855
Ultimo-Pyrmont-Central Sydney 27% 18,917
Sydney Olympic Park 21% 8,068
Rhodes Business Park 20% 10,879
Hornsby 18% 7,055
Hurstville 15% 8,052
Kogarah 15% 7,769
Macquarie Business Park 15% 43,297
Sydney Airport and Environs 14% 27,826
Randwick Education and Health 12% 11,116
Blacktown 11% 8,506
Westmead Health 10% 10,374
Liverpool 8% 13,107
Bankstown 8% 8,317
Penrith 6% 14,261



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