Page 2 - SAFETY WARNING; HEALTH AND SAFETY AT WORK; (b) The equipment must be disconnected/isolated from the incoming; Safety of Road Users
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 2 SAFETY WARNING HEALTH AND SAFETY AT WORK Safety of Installation and Maintenance Personnel In the interests of health and safety, when installing, using or servicing this equipment the following instructions must be noted and adhered to: (i) ...
Page 3 - TABLE OF CONTENTS; Chevron type loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 3 TABLE OF CONTENTS SAFETY WARNING ........................................................................................................ 2 1. INTRODUCTION ........................................................................................
Page 4 - FIGURES
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 4 3. CABLING ............................................................................................................... 41 3.1 Cabling and Preparation of Cables for Termination ........................................ 41 3.2 Cabling Joint...
Page 5 - INTRODUCTION
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 5 1. INTRODUCTION 1.1 Purpose This handbook is one of a series of General Traffic handbooks that cover common aspects of planning, installation and commissioning of STC traffic controllers and associated street equipment. 1.2 Scope This handbo...
Page 6 - Issue State
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 6 1.4 Issue State Pages Current Issue Type Part ID All 13 Meridian 667/HE/20663/000 1.5 Glossary UD Uni-directional LRT Light Rapid Transport SDE/SA Speed Discrimination Equipment/ Speed Assessment SCOOT Split, Cycle, Offset Optimisation Techn...
Page 7 - INSTALLATION OF TRAFFIC LOOPS AND FEEDER CABLES IN SLOTS; The works specification specifies cable to be used.; Positioning of Loops and Loop Tails/Feeders
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 7 2. INSTALLATION OF TRAFFIC LOOPS AND FEEDER CABLES IN SLOTS Before the work is carried out, the tools listed in the General Principles Installation handbook (see section 1.3.1) should be available. 2.1 Loop Cable and Slot Dimensions Loop slo...
Page 8 - Buried Cables
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 8 However, in the case of SDE/SA loops, the presence of an isolated heavy metal object can distort the electromagnetic effect of one of the pair of loops so that a false speed assessment is given. In these cases it is necessary to re-site the ...
Page 9 - Feeders; Loop configurations are normally of the following types:; Replacement Controllers
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 9 2.2.7 Feeders Sharing of a multi-pair feeder cable between different detectors is not recommended. See section 2.7 for feeder types. 2.3 Loop Configurations Loop positions will be marked prior to slot cutting, as per the positioning instruct...
Page 10 - Determine the length of the loop diagonal as follows:
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 10 2.3.5 Procedure for Marking Position of Diamond Loops Prior to Slot Cutting These notes are to be read in conjunction with Figure 1 and Figure 2 but kerbs and distances from carriageway centre lines are subject to any standing Local Authori...
Page 11 - loop ‘a’ is for a three lane configuration,; UD Loops; Figure 5 illustrates a three-lane chevron loop approach.
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 11 1) Refer to the STS drawing and mark the locations ax, bx, cz 1.1 metres towards the top line for the loop approach distances X, Y, Z shown on the STS drawing. (In Figure 3 loop ‘a’ is for a three lane configuration, ‘b’ is a two lane and ‘...
Page 12 - The dimensions of the UD loop overlay are illustrated in Figure 7.; Turning Loops and SDE/SA Loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 12 c) In the case of multi-lane links where more than one loop is provided, the gap between two adjacent detectors on a link should be approximately 2.5 m (based on the width of an average vehicle) so as to balance under-counting and over-coun...
Page 13 - Special Loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 13 stopline is required, chevron loops away from the direction of traffic should be used. 2.3.10 Special Loops Figure 13 illustrates queue loops and special purpose loops whereby fixed and limits of variable dimensions are shown. These loop co...
Page 14 - Siemens ST4R / SLD4 Detectors
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 14 2.5.1 Siemens ST4R / SLD4 Detectors FACILITY SHAPE NO.OF NO.OF MAX LANES TURNS FEEDER V/A Chevron/Diamond 1 to 3 3 300 m V/A Chevron/Diamond 4 3 250 m V/A Chevron/Diamond 5 3 200 m V/A Chevron/Diamond 6 3 150 m SDE/SA Rectangle 1 3 300 m SD...
Page 15 - Cable Laying and Slot Backfilling Procedures; Epoxy Materials
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 15 2.6 Cable Laying and Slot Backfilling Procedures 2.6.1 Loop Cable Laying The loop cable should be dry. Loops are laid starting at the kerb, running the tails out winding the loop and returning via the same slot to the kerb. When winding a m...
Page 16 - Feeder Cables
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 16 Joint Sealers for Road Expansion Joints 1) CALKTITE JOINT SEALERS Polyurethane: P J Sealant or Polysulphide: Sealant 195 Sealocrete PLA Ltd., Greenfield Lane, Rochdale, OL11 2LD 2) CLARES BLACK JOINTING COMPOUND SM3 R.S. Clare & Co. Ltd...
Page 17 - Feeder Cable Slot Details and Backfilling
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 17 The feeder cable is supplied with 1.5 mm 2 or 2.5 mm 2 copper conductors and may be manufactured with or without steel wire armour to meet customer specification. The referred types are 1 or 2 pair non-armoured cables with 1.5 mm 2 conducto...
Page 18 - Joint Loop Tails to Feeder Cables; Guidance for loop to feeder joint connections as follows:; Cable Entry Through and Under the Kerb
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 18 Backfilling shall be with fine cold asphalt rammed into the slot and finished with a surface layer of hotpour of 20 mm nominal depth. 2.9 Joint Loop Tails to Feeder Cables STC approved joint is the acrylic joint to specification 915/4/03118...
Page 19 - Loop Detector Settings; For SDE/SA the two loops must be set to the same sensitivity.; Presence Time; This is defined as the time for which
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 19 2.11 Loop Detector Settings 2.11.1 Sensitivity For normal VA purposes the detectors should be set to give bicycle detection. This requires a sensitivity setting of 0.01% or 0.02%. If the setting is too sensitive the detector will be unduly ...
Page 20 - Figure 1 - Marking out Diamond Loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 20 Figure 1 - Marking out Diamond Loops (Use for replacement or MOVA only) See Figure 21 for distance from stop line. Figure 2 - Table of Dimensions for Diamond Loops (Use for replacement or MOVA only) Distance between Datum Point and End Poin...
Page 21 - Calculation of Loop Dimensions
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 21 Calculation of Loop Dimensions Loop Diagonal Length of Side Feet Metres Feet Metres 4.00 1.22 2.83 0.86 4.50 1.37 3.18 0.97 5.00 1.52 3.54 1.08 5.50 1.68 3.89 1.19 6.00 1.83 4.24 1.29 6.50 1.98 4.60 1.40 7.00 2.13 4.95 1.51 7.50 2.29 5.30 1...
Page 22 - Figure 3 - Marking Out Chevron Loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 22 Figure 3 - Marking Out Chevron Loops bx xx cx xx by aa1 xx xx xx ay1 xx Di s ta nce fr om s to p lin e aa az ay D1 D1 ax 0.3 m D1 1.1 m 1 m 1 m xx xx by1 Di s ta nce fr om s to p lin e bz 0.3 m 1.1 m Direction of traffic See Figure 21 for d...
Page 23 - Figure 4 - Typical Loop Configurations with UD Dimensions
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 23 Figure 4 - Typical Loop Configurations with UD Dimensions – Diamonds Loop tails Maximum length offeeder cable = 150 m(obsolescent, use forreplacement only) 1 m 1/3 x 0.3 m to kerb edge 1 m x U/D
Page 24 - Figure 5 - Typical Loop Configurations with UD Dimensions
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 24 Figure 5 - Typical Loop Configurations with UD Dimensions – Chevrons 0.3 m 0.2 m U/D loop overlaps X loopby 0.2 m (0.3 m indirection of travel) 1 m 0.3 m to kerb edge X U/D X = 1 m, subjectto local survey
Page 25 - Figure 6 - Typical SCOOT Loop Leading Dimensions; Figure 7 - Typical Count Loop Leading Dimensions; Dimension B = Refer to Figure 23 to Figure 27.
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 25 Figure 6 - Typical SCOOT Loop Leading Dimensions 2.5 m NA 0.3 m 1 m 0.15 m U/D 2 m Figure 7 - Typical Count Loop Leading Dimensions 0.15 m B A 1 m 1.8 m Dimension A = 0.27m Dimension B = Refer to Figure 23 to Figure 27. Dimensions to be mar...
Page 26 - Distance from stop line; Figure 9 - Rectangular Turning Loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 26 Figure 8 - Rectangular SDE/SA Loops Refer also to section 2.3.8 and Figure 10 for SDE/SA loop options. Direction oftravel x Roadcentre 1.2 m – 3.6 m 1 m Distance fromstop line 0.3 m 1 m 1.8 m x = Refer to note in section 2.3.8 for dimension...
Page 28 - Figure 11 - MOVA Loops One Way Street or Dual Carriageway
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 28 Figure 11 - MOVA Loops One Way Street or Dual Carriageway 0.8 m 0.8 m 0.8 m 0.8 m 0.4 m Lane 1 Lane 2 Lane 3 0.4 m 1.6 m to 1.7 m Figure 12 - MOVA Loops Two Way Carriageway 0.6 m 0.8 m 0.8 m 0.4 m 1.6 m to 1.7 m
Page 29 - Figure 13 - Special Purpose Loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 29 Figure 13 - Special Purpose Loops 1.4 m – 15.0 m 1.2 m (a) Call and Extend loops Non-bicycle sensitive. Not approved for use on roads in UK. 1.4 m – 15.0 m 1.2 m (b) Call and Extend loop Non-bicycle sensitive. Not approved for use on roads ...
Page 30 - Figure 14 - Slot Details; Figure 15 - Maintaining 50 mm Covering at Crossovers; Floor of both slots dipped at; Note: Not to be carried out at diamond crossovers
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 30 Figure 14 - Slot Details Road surface Hot pour compound 8.5mm min 50mm covering (25mm in concrete) Epoxy material or sand Loop cables Figure 15 - Maintaining 50 mm Covering at Crossovers Floor of both slots dipped at crossover Loop cables i...
Page 31 - Figure 16 - Cutting Away Sharp Corners
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 31 Figure 16 - Cutting Away Sharp Corners Figure 17 - Slot Corners Protected by Corner Pieces 1mm Vinyl/Plastic corner protection pieces SLOT W IDTH998/4/85264/000 8mm998/4/82021/000 10mm998/4/70671/001 SLOT W IDTH to bewidened to998/4/85264/0...
Page 34 - THIS CONFIGURATION TO COVER 6 LANES MAXIMUM AS SHOWN; Figure 21 - Distance X, Y and Z Loops to Stop Line; Number of Loops
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 34 Figure 20 - Standard Loop Configurations (c) (Diamonds are largely obsolescent, use for replacement or MOVA only) THIS CONFIGURATION TO COVER 6 LANES MAXIMUM AS SHOWN Figure 21 - Distance X, Y and Z Loops to Stop Line Distance from Stop Lin...
Page 35 - Figure 22 - Distance SDE-SA Loops to Stop Line
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 35 Figure 22 - Distance SDE-SA Loops to Stop Line Traffic Signal and Pelican Extension Distance Double SDE 79 metres Triple SDE – Inner 91 metres Triple SDE – Outer 159 metres Speed Assessment 151 metres Note: For full details refer to HA Spec...
Page 36 - Figure 24 - Dimensions; For full details, refer to HA specification MCE 0115A; B Loop
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 36 Figure 24 - Dimensions – 2 Lane N Counting Loops For full details, refer to HA specification MCE 0115A B Loop A Loop 3 4 5 6 7 8 8 7.5 7 6.5 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 Width of Road (metres) Centre of Road Di sta nce across Roa d...
Page 37 - Figure 25 - Dimensions
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 37 Figure 25 - Dimensions – 3 Lane N Counting Loops For full details, refer to HA specification MCE 0115A C Loop B Loop B Loop A Loop A Loop 7 8 9 10 11 12 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Width of Road (metres) Centre of Road Di sta nce acr...
Page 38 - Figure 26 - Dimensions
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 38 Figure 26 - Dimensions – 2 Lane N+1 Counting Loops For full details, refer to HA specification MCE 0115A B Loop A Loop 3 4 5 6 7 8 C Loop B Loop 8 7.5 7 6.5 6 5.5 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 Width of Road (metres) Centre of Road Di sta ...
Page 39 - Figure 28 - Cabling Through the Kerb
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 39 Figure 27 - Dimensions – 3 Lane N+1 Counting Loops For full details, refer to HA specification MCE 0115A C Loop B Loop B Loop A Loop D Loop A Loop 7 8 9 10 11 12 12 11 10 9 8 7 6 5 4 3 2 1 0 Width of Road (metres) Centre of Road Di sta nce ...
Page 40 - Figure 29 - Cabling Under the Kerb
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 40 Figure 29 - Cabling Under the Kerb Bottom of slot Footway Kerb Bitumen Asphalt backfill Slot Cable Concrete or asphalt backfill Duct under kerb
Page 41 - CABLING; Assumes MPJ1or MPJ2 jointing kit used. See Figure 30 and Figure 31.
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 41 3. CABLING This section applies to paired loop feeder cable and multicore cable to Detector Pole Boxes and Signals Heads. 3.1 Cabling and Preparation of Cables for Termination 1. Traffic intersections are cabled in accordance with the sched...
Page 42 - Feeder Cable to Loop Tails using the BICC MPJ Series Joint
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 42 * Remove the outer insulation and break off the armour by repeated bending. * Cut through the outer insulation 50 mm from the end of the armour without cutting into the armour. * Remove outer insulation. * Terminate the bedding so that 10 m...
Page 43 - Preparation, Mixing and Pouring of BICC Bi-Cast Acrylic Resin; If the last two digits are not the same,; on no account; should they be mixed
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 43 Cut the stepped ends of the shell halves so that they fit over the outer insulation of the cable and the bundle of detector loop tails without interference but, at the same time, giving minimum clearance in order to avoid eccentricity. Cont...
Page 44 - Feeder Cable to Detector Loop Tails using the Heatshrink Joint
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 44 CAUTION: Certain individuals are susceptible to sensitisation and if a skin rash develops medical advice should be sought. Any resin splashes on the skin should be removes before the resin hardens. 3.2.4 Feeder Cable to Detector Loop Tails ...
Page 45 - Remove 12 mm of insulation from each core.
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 45 Prepare the feeder cable as detailed for the type of joints and the joint kit to be used. Cut the conductors to length ensuring that the joints will be staggered within the joint shell. The outer sheath must project at least 50 mm into the ...
Page 46 - Figure 30 - Preparation of Armoured Cable End
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 46 Figure 30 - Preparation of Armoured Cable End Figure 31 - Armoured Cable to Armoured Cable Joint
Page 47 - APPENDIX A; Introduction; Earthing and Bonding Policy for Manchester Metrolink.; Background; The recommendations that follow are aimed at preventing this.; Spacing of Street Furniture from LRT Track and Vehicles
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 47 APPENDIX A - PRECAUTIONS TO BE TAKEN WHEN PLANNING THE INSTALLATION AND MAINTENANCE OF TRAFFIC CONTROL EQUIPMENT IN THE VICINITY OF LIGHT RAPID TRANSPORT SYSTEMS Introduction The details given in this Appendix are designed to assist in the ...
Page 48 - Spacing of Cables from LRT Track
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 48 The installation manuals for all street furniture including cabinets, poles, signals, detectors, key switches and push buttons should be amended where necessary to include this information. Spacing of Cables from LRT Track Vehicle detector ...
Page 49 - APPENDIX B
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 49 APPENDIX B - SETTING UP MICROSENSE / PEEK / SARASOTA DETECTOR UNITS APPLICATION MICROSENSE PEEK/SARASOTA DETECTORS MSED/MXED Detectors Front Panel binary switches Link 28 on PCB Peek /Sarasota Mode Setting for front panel rotary switch Sett...
Page 50 - INDEX
L OOP D ETECTOR H ANDBOOK 667/HE/20663/000 Issue 13 Page 50 INDEX Backfilling slots ................................................ 15 Cable ................................................................. 7 Cable jointing .................................................. 41 Cable terminations .....
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