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A12 Chelmsford to A120 widening
Third round of forums
25 November – 7 December 2016
The Project team:
Shah Hussain– Project Manager (Highways England)
Patrick de Feu – Project Manager (Jacobs)
David Orr-Ewing – Principal Engagement Manager (Jacobs)
Jennifer Goddard – Business Manager (Highways England)
Philippa Garden – Engagement Lead (Jacobs)
Agenda
Introduction
Sifting for the fictional town of Avalon
Sifting for the A12
Traffic modelling
AOB – forum feedback
Sifting for fictional town
5
Fictional town of Avalon
Avalon is situated on the Arthurian motorway network. The section running 2 km either side of the town is almost
50 years old.
The town has a rich history with an historic battleground, remembrance park of Camlann, Monmouth Area of
Outstanding Natural beauty (AONB) and Nyneve Lake all near by.
The economy is largely dependent on tourism and agriculture. Both of which depend on the local waterways.
Map of fictional Avalon
6
Stages of sifting
identify issues & objectives
create long list of options to
achieve objectives
'shortlist options'
select options for
consultation
Identification of problems and
objectives
Avalon’s issues:
Long journey times to the
motorway
Large farming industry -
businesses are finding cost of
transport are affecting their growth.
Local roads frequently flood
No road improvements for 50
years
8
How? • Desk based study of national and
local policies and priorities • Identification of study area • Analysis of current situation • What the future looks like This work produces. • Key objectives based on analysis and
engagement with statutory bodies.
Generating options Avalon’s Town Council have
previously commissioned route options
Lord Pendragon, a major landowner and farmer put forward a route last year
A number of local specialists from the council and government organisations were engaged to generate route options
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This work generates 20+ options
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The Options Sifting Process
• ‘Sifting’ is the evaluation of many different options.
• Key is that the options meet the defined objectives and a strategic fit.
• Department for Transport Early Assessment and Sifting Tool (‘EAST’) is used to sift options.
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• Routes that didn’t meet strategic objectives
• Engineers and environmentalists
look at options to identify the best ‘route’ in each avoiding ‘environmental showstoppers’
• This process identifies a short list of
feasible better performing options
Shortlisting – part one
What to look at…
• Route problems • Study objectives • Scheme deliverability,
feasibility and affordability
Shortlisting - part two
Apply the Treasury’s Case Model
1. Strategic case
2. Economic case
3. Management case
4. Financial case
5. Commercial case Review original objectives and enhance and apply
12
13
Fictional town of Avalon - viable
options for consultation Route generation and sifting is detailed in an Options Appraisal Report.
What happens next
14
Analyse the responses received and then undertake any additional technical work required
Report the feedback received to the decision maker
Should decision maker believe there is a compelling case for the scheme and a suitable option, a preferred route would be announced
Further engagement with communities, land owners and stakeholders as the preferred route is developed and more technical work takes place, including environmental
A statutory public consultation on the Preferred Route
Further technical work and engagement, then submit an application for a Development Consent Order (Planning Application)
Consent Order decision received
If successful, construction would begin
Sifting for the A12
Stages of sifting
identify issues & objectives
create long list of options to
achieve objectives
'shortlist options'
select options for
consultation
Identifying issues and objectives
Issues
Congestion
Safety
Resilience
Reliability
Substandard junctions
Poor provision for non-motorised users
Objectives
Improving user satisfaction
Making the network safer
Supporting the smooth flow of traffic
Encouraging economic growth
Delivering better environmental outcomes
Helping cyclists, walkers and other vulnerable road users of the network
Long list of options Using existing reports, technical workshops and objectives, a
long list of options was created:
• 5 options, including:
• Implement high occupancy vehicle lanes
• Upgrade existing rail routes and branch lines
• Implement Bus Rapid Transit
Public transport
• 3 options, including:
• Implement safety measures such as “keep apart” chevrons and ban HGV overtaking
• Remove and divert at grade rights of way and /or improve at grade crossings
Collision reduction and incident management
• 15 options, including:
• Providing a new parallel offline route from junction 19-25
• Review and rationalise junctions
• Road repairs
Highways improvement
options
Shortlisting of options - part one
Long list shortened by applying objectives. The following
were eliminated as they would not tackle all problems that
need to be addressed:
Public transport options
Collision reduction & incident management measures
A number of highways improvement options
Shortlisting of options - part two
We then asked the following of the six remaining options:
Is it the right strategic fit?
Does it show value for money?
Is there a financial and commercial case?
Can it be delivered?
This left 3 options
Enhanced objectives
We then undertook a review and enhanced and added to
the initial objectives:
Supporting economic growth
A safe and serviceable network
A more free flowing network
An improved environment
A more accessible and integrated network
Customer satisfaction
What happens next
22
Analyse the responses received and then undertake any additional technical work required
Report the feedback received to the decision maker
Should decision maker believe there is a compelling case for the scheme and a suitable option, a preferred route would be announced
Further engagement with communities, land owners and stakeholders as the preferred route is developed and more technical work takes place, including environmental
A statutory public consultation on the Preferred Route
Further technical work and engagement, then submit an application for a Development Consent Order (Planning Application)
Consent Order decision received
If successful, construction would begin
Traffic Modelling
Traffic modelling
Identify problems and objectives for
an area
Data Collection
Development of 2016 traffic
model
Development of future traffic growth
models
Scheme option
assessment
Stage 1
Options
identification
Stage 0
Outline
Strategy
Current position
Data collection – existing vehicle
movements Between April and June
2016 we commissioned a
large number of traffic
surveys across the area.
Other data sources used
include:
Highways England’s
journey time and traffic
flow
Traffic data from the
A120 study
Mobile phone origin-
destination data
Trafficmaster origin-
destination and journey
time data
Colchester
Chelmsford
Witham
Braintree
Existing traffic capacity and journey
time Up to 90,000 vehicles per day (two-way)
Over 4,000 vehicles in each direction at the busiest locations Existing flows are over 85% Capacity
Existing flows are under 85% Capacity
Existing flows are over 100% Capacity
J22
Junction 19 - 25
Free flow journey time - 15 mins
Typical peak journey time - up to 25 mins
J19 J20a J20b J21 J23 J24 J25
Witham
Hatfield Peverel
Chelmsford
A120
Kelvedon
A130
B1019
B1018 B1024
Traffic Model We are currently developing a new traffic model using the 2016 traffic data using computer software. The model reflects typical weekday ‘peak hour’ conditions.
The model will allow us to study how traffic moves across the area, not just on the A12, but a much wider area.
Forecast models allow us to see how traffic might change in the future on the A12 and on local roads (with and without the implementation of scheme options).
A12
A12
Witham
Colchester Braintree
Chelmsford
Brentwood
Understanding scheme benefits
The scheme will lead to significant improvements in traffic conditions throughout the wider area and not
just on the scheme itself. We study this by developing a traffic growth ‘forecast’ model which tells us
about traffic conditions in the future.
Traffic modelling allows us to assess a number of different impacts and benefits across the entire study
area including (but not limited to):
• Journey time savings
• Vehicle operating cost savings (lower fuel usage, reduced vehicle maintenance, etc.)
• Accident savings
These benefits can be turned into a monetary value then used to provide a “Benefit to Cost Ratio”
(BCR) and subsequently estimate the Value for Money of the scheme. Any scheme must demonstrate
Value for Money.
Any other business – forum feedback
forms
Contact and more information:
Email: [email protected]
Website: www.highways.gov.uk/A12chelmsfordA120widening
