Frome Road, Odd Down, Bath
Siemens Mobility, Traffic Solutions
Siemens Traffic Controls
Sopers Lane
POOLE
Dorset
BH17 7ER
UNAPPROVED
Technical Proposal
Scheme :
Client :
Puffin Crossing Signal Design, Frome Road, Odd Down, Bath
Connect Consultants
Issue: 2.0 - Rev B
Company/Dept.
Name
Function
Date
Prepared By
Siemens Mobility, Traffic Solutions
Anoop Sumal
Traffic Design Engineer
08/11/2010
Reviewed By
Company/Dept.
Name
Function
Date
Siemens Mobility, Traffic Solutions
Neil Dayment
Senior Engineer
12/11/2010
COPYRIGHT STATEMENT
The information contained herein is the property of Siemens plc and is supplied without liability for errors or
omissions. No part may be reproduced or used except as authorised by contract or other written permission. The
copyright and the foregoing restriction on reproduction and use extend to all media in which the information may be
embodied.
Copyright  Siemens plc 2010 All Rights Reserved.
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Contents
1.0
Introduction..........................................................................................................3
1.1
Purpose ...........................................................................................................3
1.2
Scope ..............................................................................................................3
1.3
Related Documents .........................................................................................3
1.4
Issue state and amendments ...........................................................................3
2.0
Design & Safety Considerations ..........................................................................4
3.0
Civil Engineering Requirements...........................................................................5
3.1
Duct Network ...................................................................................................5
3.2
Pavement Surface and Kerbing .......................................................................6
3.3
Lining ...............................................................................................................6
3.4
Signing.............................................................................................................6
4.0
Electrical Requirements .......................................................................................7
5.0
Traffic Signal Requirements.................................................................................7
5.1
Detection .........................................................................................................7
5.2
Timings ............................................................................................................8
5.3
Communication................................................................................................8
6.0
Equipment Schedule............................................................................................9
6.1
Signal Equipment.............................................................................................9
6.2
Other Equipment............................................................................................10
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1.0
INTRODUCTION
1.1
PURPOSE
The purpose of this document is to provide design proposals to Connect Consultants for
the implementation of a new puffin crossing on Frome Road, Odd Down, Bath.
1.2
SCOPE
This document is limited to the description of a traffic control system to be implemented at
the above site and is restricted to the proposed control strategy and the equipment
required.
1.3
RELATED DOCUMENTS
This document should be read in conjunction with the following documents:
AutoCAD Drawing ‘853308897_Rev B’,
Risk Assessment ‘853308897 RA_Rev A’,
1.4
ISSUE STATE AND AMENDMENTS
Issue No
1.0
2.0
Issue 2.0
Revision
A
B
Comments
Issued for Approval
Amendments following comments
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Frome Road, Odd Down, Bath
2.0
DESIGN & SAFETY CONSIDERATIONS
The purpose of this document is to provide design proposals to Connect Consultants for
the implementation of a new puffin crossing on Frome Road in Odd Down, Bath.
The introduction of a new nearside puffin crossing on Frome Road is part of a design of
highway improvement works for new development of the surrounding area; an
appropriate traffic control strategy is required to accommodate the current and future
safety for pedestrians. This technical proposal, associated drawing, risk assessment are
based on the layout provided by Connect Consultants, drawing reference ‘O1 - 07342 200 - General Arrangement Plan’ and requirements.
All new traffic signal heads are to be of the CLS LED type and conform to
EN12368:2006. Backing boards shall be supplied with and fitted to all vehicle traffic
aspects. They shall be fitted using the correct number and type of fixings as specified by
the manufacturer. All new vehicle traffic signal heads are to have a white, high intensity
reflective border.
Tactile devices and audible devices will be provided on each pole at the push buttons.
These will be provided to assist those pedestrians that are/or partially sighted and hard of
hearing.
The site shall operate lamp dimming from a photo electric cell (positioned on pole 1).
High friction surfacing should be laid as proposed by the drawing ‘853308897_Rev B’.
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3.0
CIVIL ENGINEERING REQUIREMENTS
3.1
DUCT NETWORK
It is proposed that a fully integrated duct network be provided. The network should
comprise of rotationally moulded PVC boxes and fitted with a composite anti-skid cover.
All traffic signal ducts within the network are to be 100mm diameter, high density,
polyethylene ducting, orange in colour and labelled “Traffic Signals”. 50mm diameter
black duct to be laid between the traffic signal controller and electricity supply pillar for
mains electrical connection.
An access chamber (600x600x640mm) of the same construction as above should be
provided adjacent to the controller position. Three ducts should be laid between the duct
box and the controller base.
All ducts shall be provided with a draw cord which shall be maintained on completion of
the cable installation. This is to enable future cable installation if required.
A minimum clearance of 450mm and 750mm should be maintained above ducts laid
respectively in the footway or carriageway.
It is also required that a NAL pole retention socket RS115DF X445 be provided at each
new pole location to ease the installation of signal poles and the subsequent drawing of
cables. Please refer to drawing ‘853308897_Rev B’ for exact position of NAL sockets,
signal poles and the subsequent drawing in of cables.
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3.2
PAVEMENT SURFACE AND KERBING
The descriptions, observations and requirements as laid out in this section are limited to
the civil requirements related to the traffic signal design. Detail designs of any civil
requirements are outside the scope of this report although standard detail drawings may
be provided where possible. Observations are only made on physical surface of the
pavement. Tests to determine the structural integrity of the pavement have not been
carried out.
Tactile paving should be provided in an L-shaped pattern at each of the crossing points.
These should be the width of 2.4 m as shown in drawing ‘853308897_Rev B’. The kerbs
should be dropped for the distance of the crossing, but not exceeding a gradient of 8%
(1:12). The tail of the paving should be on the edge adjacent to the push button unit.
3.3
LINING
The descriptions, observations and requirements as laid out in this section are limited to
the lining requirements related to the traffic signal design. Detail designs of any lining
requirements are outside the scope this report.
All lines are to be laid in accordance with the Traffic Signs Manual, The Traffic Signs
Regulations and General Directions 2002 and The Zebra, Pelican and puffin Pedestrian
Crossings Regulations and General Directions 1997.
3.4
SIGNING
The descriptions, observations and requirements as laid out in this section are limited to
the signing requirements related to the traffic signal design. Detail designs of any signs
requirements are outside the scope this report.
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4.0
ELECTRICAL REQUIREMENTS
A suitable 240v 50Hz electrical supply should be provided and terminated into a feeder pillar
adjacent to the signal controller position. The traffic signal controller will be connected to the
mains supply via a 30 amp rated lockable isolator.
The civil engineering contractor shall be responsible for the provision of the 240V mains supply to
the feeder pillar. The signal contractor shall be responsible for providing the double pole, fused,
secondary isolator in the feeder pillar and any mains cable required from the feeder pillar to the
controller.
5.0
TRAFFIC SIGNAL REQUIREMENTS
Please refer to drawing ‘853308897_Rev B’ for traffic signal layout design.
5.1
DETECTION
The detection system proposed to be implemented includes microwave vehicle detectors,
kerbside detectors and on-crossing detectors.
The crossing will use above ground detection in the form of microwave vehicle detectors
(MVDs) for vehicles approaching the crossing. This is deemed appropriate given the
speed of the road.
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5.2
TIMINGS
Crossing timings have been calculated according to LTN 2/95 and can be found below.
Operation Cycle and Timings for Toucan Crossing
Signals Shown
Period
5.3
Timings
(Seconds)
To Pedestrians
To Vehicles
1
Red Standing Figure
(Wait)
2
Red Standing Figure
3
Red Standing Figure
Green
(proceed if way is clear)
Amber
(stop unless not safe to do so)
Red
(Stop, Wait behind Stop Line
on Carriageway)
4
Green Walking Figure
Red
5
5
Red Standing Figure
(do not start to cross)
Red
3
6
Red Standing Figure
Red
7
8
Red Standing Figure
Red Standing Figure
9
Red Standing Figure
Red
Red
Red with Amber
(stop)
7/30
3
3 max change / 3 gap change
6
(pedestrian extendable period)
0
0
2
COMMUNICATION
A Siemens GSM Gemini2 OMU will be installed and allow communication between the
site and Bath & North East Somerset Council Remote Monitoring System. The client will
be responsible for the provision of the GSM card.
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6.0
EQUIPMENT SCHEDULE
Please refer to drawing number ‘853308897_Rev B’ for traffic signal layout design. The
below quantities are also taken from this design.
6.1
Issue 2.0
SIGNAL EQUIPMENT
Quantity
Item
1
Pedestrian Signal Controller (e.g. Siemens ST700 LV)
2
Pedestrian Kerbside Detector, 4m range (e.g. Visilogue Visipad)
2
Pedestrian On crossing Detector (e.g. AGD 220)
2
Microwave Vehicle Detector (e.g. AGD 206)
2
Straight pole, black, plastic coated traffic signal poles complete with pole
caps (e.g. NAL Type C 3.705) and 300mm side mounted bracket.
4
Primary RAG LED Signal head complete with backing boards and hoods
(e.g. Siemens Helios LED RAG)
2
ELV Nearside Red/Green Man display Units with seperate ELV Nearside
Push-Button Unit with audible and tactile devices
1
Photo Electric Cell
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6.2
OTHER EQUIPMENT
Issue 2.0
Quantity
Item
1
Controller Inspection Chamber – 600mm x 600mm x 640mm
2
Large Access Chamber – 600mm x 600mm x 960mm
1
Medium Access Chamber – 450mm x 450mm x 640mm
2
NAL Pole Retention Socket (e.g. RS115DF X445)
Item
Ducting as shown on the drawing ‘853308897_Rev B’
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