Local Govt | National News Video | Parliament Headlines | Politics Headlines | Search

 


Puhoi to Warkworth motorway time savings unrealistic

Media release: Travel time savings claimed for Puhoi to Warkworth motorway are unrealistic

Warkworth based transport planning consultant Bevan Woodward has been studying the travel time savings claimed by NZTA for the Puhoi to Warkworth motorway.

Mr Woodward advises: "A slow trip from the tunnel to Warkworth currently takes 13 minutes. That’s an average speed of 78 km/h to travel the 17 km, but in my experience most trips are quicker than this - even during week day peak hour. The only time it's slower is during summer holiday congestion."

"For a 5 minutes travel time saving, the new 18 km motorway would have to be driven in a time of 8 minutes, this equates to a highly unrealistic speed of 135 km/h."

In addition Mr Woodward says: "If the new 18km motorway was driven at the legal speed limit of 100km/h, this would take 11 minutes. However as this is to the north of Warkworth, another one to three minutes must be added to drive through the Hill Street intersection into the town of Warkworth, meaning that there are no time savings on the existing travel time of 13 minutes."

"In NZTA's business case, claimed time savings of 5 to 8 minutes are used to calculate over half of the economic benefits of the proposed motorway. Without these unrealistic time savings the project is a very negative return on investment."

Here are the calculations...

Distance (km) Average speed (km/hr) Time (minutes)

Existing SH1 from tunnel into Warkworth (slow trip = 13 minutes) 17 78 13.1

Proposed Motorway (travel time saving of 5 minutes requires an average speed of 135 km/h) 18 135 8.0

Proposed Motorway @ legal speed limit of 100 km/h = 11 minutes travel time 18 100 10.8

A summary of key issues with the Puhoi to Warkworth motorway is attached.

--


Key issues with the Puhoi to Warkworth motorway


1) The claimed travel time saving of 5 to 8 minutes are unrealistic

A slow trip from the tunnel to Warkworth currently takes 13 minutes. That’s an average speed of 78 km/h to travel the 17 km, but most trips (even during peak hour) are quicker on this 100km/h stretch of road.

For a 5 minutes travel time saving, the new 18 km motorway would have to be driven at an unrealistic 135 km/h.

If the new 18km motorway was driven at 100km/h, this would take 11 minutes. However this is to the north of Warkworth, so when another one to three minutes to drive through the Hill Street intersection is added, it means that there are no time savings.


In NZTA's business case, the claimed time savings are used to generate over half of the economic benefits of the motorway. When these unrealistic time savings are removed from the BCR calculation, the project’s total economic benefit is a negative return on the Government’s investment.

2) The motorway’s single point of access to Warkworth is likely to negatively impact on the town.

Having only one access point to the motorway at Warkworth means making a compromise solution that will have potentially negative impacts on certain sectors and causes travel delays.

For example a single point of access to the North is likely to have very negative impacts for Warkworth retailers and it lengthens travel times between Warkworth and Auckland.


A single point of access to the south means the holiday traffic will continue to queue up over long weekends and public transport access through Warkworth is be impaired.

A single point of access to the west (eg: Woodcocks Rd) would put too much traffic past the College and does not solve the issue of holiday traffic congestion through Warkworth.

A bypass road with multiple access points (as outlined in point 4 below) resolves these issues.


3) We can’t afford it

The Government is borrowing $250 million a week to fund its budget deficit. Consequently, ratings agency Standard & Poor's recently downgraded the outlook on NZ’s national credit rating to negative, this has a direct cost for all New Zealanders.


4) There are more cost-effective solutions are available

Safety improvements on SH1, bypasses of Warkworth and Wellsford, provision of public transport, along with upgrading the Northern railway line is a far more cost- effective and comprehensive solution.

It will provide multiple access points to Warkworth and leave us better placed to with future issues such as:

• Deal with the effects of rising oil prices

• Reduce our carbon emissions

• Spreading the economic development across Rodney

• Providing public transport to the region

• Delivering travel time savings sooner


ENDS

© Scoop Media

 
 
 
 
 
Parliament Headlines | Politics Headlines | Regional Headlines

Digital Evolution: Scoop Independent News Launches "Operation Chrysalis"

From today Scoop is beginning a process of public consultation with the political, business and civil society groups it has served for the past 15 and a half years.

"It is hoped that in time - with new leadership and increased community engagement - the chrysalis will incubate a new kind of Scoop, one which can sustainably continue Scoop's Mission 'to be an agent of positive change'", says Scoop Founder, Editor and Publisher Alastair Thompson.

"As big publishing shrivels, public participation in contributing and spreading news has grown. Scoop has evolved with this wave by providing an independent platform, committed to upholding democracy, providing a voice to all, and providing the public easy access to information about decisions which affect them." More>>

 

Parliament Adjourns:

Greens: CAA Airport Door Report Conflicts With Brownlee’s Claims

The heavily redacted report into the incident shows conflicting versions of events as told by Gerry Brownlee and the Christchurch airport security staff. The report disputes Brownlee’s claim that he was allowed through, and states that he instead pushed his way through. More>>

ALSO:

TAIC: Final Report On Grounding Of MV Rena

Factors that directly contributed to the grounding included the crew:
- not following standard good practice for planning and executing the voyage
- not following standard good practice for navigation watchkeeping
- not following standard good practice when taking over control of the ship. More>>

ALSO:

Gordon Campbell:
On The Pakistan Schoolchildren Killings

The slaughter of the children in Pakistan is incomprehensibly awful. On the side, it has thrown a spotlight onto something that’s become a pop cultural meme. Fans of the Homeland TV series will be well aware of the collusion between sections of the Pakistan military/security establishment on one hand and sections of the Taliban of the other… More>>

ALSO:

Werewolf Satire:
The Politician’s Song

am a perfect picture of the modern politic-i-an:
I don’t precisely have a plan so much as an ambition;
‘Say what will sound most pleasant to the public’ is my main dictum:
And when in doubt attack someone who already is a victim More>>

ALSO:

Flight: Review Into Phillip Smith’s Escape Submitted To Government

The review follows an earlier operational review by the Department of Corrections and interim measures put in place by the Department shortly after prisoner Smith’s escape, and will inform the Government Inquiry currently underway. More>>

ALSO:

Intelligence: Inspector-General Accepts Apology For Leak Of Report

The Inspector-General of Intelligence and Security, Cheryl Gwyn, has accepted an unreserved apology from Hon Phil Goff MP for disclosing some of the contents of her recent Report into the Release of Information by the NZSIS in July and August 2011 to media prior to its publication. The Inspector-General will not take the matter any further. More>>

ALSO:

Drink: Alcohol Advertising Report Released

The report of the Ministerial Forum on Alcohol Advertising and Sponsorship has been released today, with Ministers noting that further work will be required on the feasibility and impact of the proposals. More>>

ALSO:

Other Report:

Leaked Cabinet Papers: Treasury Calls For Health Cuts

Leaked Cabinet papers that show that Government has been advised to cut the health budget by around $200 million is ringing alarm bells throughout the nursing and midwifery community. More>>

ALSO:

Get More From Scoop

 

LATEST HEADLINES

 
 
 
 
 
 
 
 
Regional
Search Scoop  
 
 
Powered by Vodafone
NZ independent news