2. Purpose
• So designers can create concept to
complete plan set and spec package for
MDOT ITS projects or other municipal
ITS projects.
• Uniform guidelines and design criteria for
ITS elements implemented on MS urban
freeways, rural freeways, urban arterials
and rural roadways.
• Manual doesn’t address specific details
designers encounter, so must confirm
assumptions with ITS Program Manager.
3. Typical ITS design elements
• Electrical power location
• Fiber optic communications infrastructure
• Dynamic Message Signs (DMS)
• Closed-Circuit Television (CCTV) system
• Radar Detection System (RDS)
• Video Detection System (VDS)
• Road Weather Information System (RWIS)
• Highway Advisory Radio (HAR)
• Communications Hut building and equipment
• Transportation Management Center (TMC)
equipment
4. Design Manual Organization
• 1 – Introduction
• 2 – General Design Guidelines
• 3 – Power Source Design and Placement
• 4 – ITS Communications Design
• 5 – Dynamic Message Sign Design
• 6 – Closed Circuit Television System (CCTV) Design
• 7 – Radar Detection System Design
• 8 – Video Detection System (VDS) Design
• 9 – ROAD Weather Information System Design
• 10 – Highway Advisory Radio Design
• 11 – HUT Building Design
• 12 – HUT Equipment Design
• 13 – Traffic Management Center Design
• 14 - Smart Work Zones
• 15 – PS&E Assembly for ITS Projects
• 16 – Appendices
5. Introduction
• Project Development Process
• Use SEMP for SEA then Design Manual
for plan development
• SEMP refers to project development
process:
• 1) Develop Concept of Operations
• 2) Develop system requirements
• 3) Develop Project SEA
• 4) Detailed Design – this manual
• Steps in Chapter 14 – key are design
concept and SEA
6. General design guidelines
Provides overall guidance for preliminary
placement – Details in Sections 3 – 12
• Concept Development
• Meet w/ District & ITS staff for scope and limits.
• Research other planned projects and coordinate
with others
• Use aerials or plan sheets showing existing
alignment and can obtain field control for scaling
• Concept Review
8. General design guidelines steps
• General Device Placement
• Before Field Visit
• While On Field Visit
• Guardrail Considerations
9. Power Source Design
• Starts in Concept phase
• Early Coordination Required
• What to show on plans
• What are demarcation locations
• When you may need transformer
• Urban vs. Rural area Considerations
• Verify obstacles for routing
10. ITS Communications Design
• Conduit / Fiber Optic Cable Placement Guidelines
• Freeways
• Urban Arterials
• Rural
• Other Agencies
• Wireless and Least Broadband
• Field Location Considerations for Fiber / Conduit
• Cable Pull boxes and Electrical Pull Boxes
• Options
• Cable Type, Construction, Fiber Mode, Count, Reel to Reel
Splicing, Conduit Types
• Fiber Allocation
• Communications Design Examples
11. Fiber Allocation
• Communications Path
• Strategies:
• Existing vs. New Device Cases; Daisy Chain
• How Many Drops / Pair
• Which Fibers are Used
• Switch Selection
ITS Field HUT/Control
Drop Cable Trunk Cable
Device Center
12. Communication Design Examples
Typical PTZ Camera
Connected to encoder and IP
network
P
T
Z SP 650
Composite Cable
Power
Data (232/422/485)
Video
Surge Block Video
Encoder
DATA SP 662
Network
Cable
Switch
Spare Jumper spliced to (A or B)
Rose and Aqua on Orange SP 658
trunk buffer
Type 5 Pull box
12 count drop cable splice
to orange trunk
Fiber Trunk (72 SM Standard)
13. ITS Device Design Sections
• Goal / Concept
• Gives Special Provision #, and refers to plan
sheets / detail sheets that may be required
• Placement Guidelines
• Urban Freeways
• Urban Arterial Streets and Highways
• Rural
• Field Location Considerations
• Additional Sections for additional
documentation as needed (DMS Types for
Example)
14. TMC Design
• Equipment Room Layout
• Equipment Rack Elevations and
Equipment Interconnections
• Operations Area Layout
• Electrical and Environmental
Infrastructure
• Construction Coordination
16. PS&E Assembly
• Includes plans, standard specs, all special provisions,
NTBs, construction cost estimates, all approved
agreements with railroads, utilities, and municipalities,
the proposal assembly and the utility and ROW
certificates.
• Ch 15 of Roadway Design Manual
• Typical Workflow
• Contract Plans
• Specs
• Special Provisions
• NTBs
• Cost Estimates
• ITS-Related Permits & MOAs/MOUs
17. ROADWAY/BRIDGE DESIGN TASKS ITS DESIGN TASKS
PHASE A: RIGHT-OF-WAY PLANS SYSTEMS ENGINEERING & PRELIMINARY ITS PLANS
Attend Roadway/Bridge Scoping Meeting Attend ITS Scoping Meeting w/ ITS Program Director
Prepare/Submit Conceptual Plans Prepare/Submit Draft Systems Engineering Analysis (SEA)
Attend Conceptual Plans Review Meeting Prepare/Submit Draft Preliminary (50%) ITS Plans *,
Specifications List and Planning-Level Const. Cost Estimate
Prepare/Submit Preliminary R.O.W. Plans Attend Review Meeting w/ ITS Program Director
Prepare/Submit Field Inspection Plans Prepare/Submit Final SEA & Preliminary (50%) ITS Plans *,
Specifications List and Planning-Level Const. Cost Estimate
Attend Field Inspection Coordinate with ITS Program Director to develop all required
permits (e.g., rail crossings) and MOUs with other agencies
Prepare/Submit Final R.O.W. Plans
If above tasks are not completed in conjunction
with Phase A: Right-of-Way Plans, the designer
shall complete within first 90 days of Phase B.
If a stand-alone ITS project, the designer shall
complete all tasks in accordance with the
mutually agreed project schedule.
PHASE B: CONTRACT PLANS FINAL ITS PLANS & SPECIFICATIONS
Attend Roadway/Bridge Design Conference
Prepare/Submit Office Review Plans Prepare/Submit ITS Office Review Plans, Specs. & Estimate
(95% Submittal)
Attend Roadway/Bridge Office Review Attend ITS Office Review w/ ITS Program Director
Prepare/Submit Final Contract Plans Prepare/Submit Final ITS Plans *, Specifications & Estimate
(Roadway/Bridge PS&E Assembly) (PS&E Assembly)
18. SHEET DESCRIPTION WORKING NUMBER(S)
Title Sheet -
Detailed Index & ITS Legend DI-1
General Notes GN-1
Summary of Quantities – recap of all project quantities SQ-1, SQ-2… SQ-n
Estimated Quantities – sheet-by-sheet & other special qty. tabulations EQ-1, EQ-2… EQ-n
Project Location Plan – serves as key map for ITS Plan Sheets LP-1
ITS Plan Sheets:
Mainline – identify route/street name and station limits ITS-1, ITS-2… ITS-n
Additional route/street names and station limits, as required ITS-p, ITS-q… ITS-z
Special Design Sheets:
Aerial-Supported Conduit – structure attachment details ASC-1, ASC-2… ASC-n
Cabinet Details – details for Type A, B or C cabinets, where req’d. CAB-1, CAB-2… CAB-n
CCTV Details – details for pole- or structure-mounted CCTV cameras CCTV-1, CCTV-2… CCTV-n
DMS Details – includes elevation- and plan-view clearance diagrams DMS-1, DMS-2… DMS-n
and other details for each overhead and roadside DMS installation
Erosion Control Plan – misc. notes/details, as req’d. by project scope EC-1, EC-2… EC-n
Equipment Details – structure attachment details ED-1, ED-2… ED-n
Fiber Optic Details – includes details for conduit trenching & boring; FO-1, FO-2… FO-n
19. DMS Details – includes elevation- and plan-view clearance diagrams DMS-1, DMS-2… DMS-n
and other details for each overhead and roadside DMS installation
Erosion Control Plan – misc. notes/details, as req’d. by project scope EC-1, EC-2… EC-n
Equipment Details – structure attachment details ED-1, ED-2… ED-n
Fiber Optic Details – includes details for conduit trenching & boring; FO-1, FO-2… FO-n
pull boxes; termination cabinets; FO cable splicing, storage & mgmt.
HAR Details – coverage area, system details & sign details HAR-1, HAR-2… HAR-n
Electrical Details – misc. notes/details pertaining to power service POW-1, POW-2… POW-n
RDS Details – pole- and structure-mounted radar detector details RDS-1, RDS-2… RDS-n
Traffic Control Plan – misc. notes/details, as req’d. by project scope TC-1, TC-2… TC-n
Traffic Control Details – misc. sheets furnished by RWD Division TCP-__
Other detail sheets – as required by project scope -
Standard Roadway Design and/or Bridge Design Drawings:
Note: Standard drawings to be chosen from list, based on project scope. -
20. Appendices
• A – Plans Checklist – What is needed
for 50% - 100% Submittals
• B – Model Sheets
• C – Typical Label Formats
• D – Special Provisions (latest at time
of design manual published version)
• E – Example Notice to Bidder
Documents
Editor's Notes
General Device Placement: Following concept review – conduct field inspectionReview project location, device locations, conduit routing, power sourcesDevice placement criteria:Field conditionsMaintenance accessibilityAbility to route comm to devicesPower accessibilityDevice protection – existing guardrailMotorist protection (addition of guardrail or use of breakaway supports) Before Field Visit:To Do list to optimize data recordingA copy of complete set of plans (base map)Check with District office on any prior roadway plans or aerial photographyContact MDOT Project Manager to arrange access to existing facilitiesWhile on Field Visit:Safety first – high visibility clothingConfirm existing device locations – i.e. poles, cabinets, signs, overhead structures and other fixed roadway features that may be used as a proposed device reference pointNote guardrail length at candidate device locationsDon’t use small signs or guardrail ends as references as they may be damageUse mile markersReference signs and significant interchange signs should be noted and displayed on plans.Guardrail ConsiderationsTry to place devices such that new guardrail not needed. Follow AASHTO Roadside Design Manual and MDOT Roadway Design Manual for guardrail design. Situations that occur on ITS Freeway Projects: Extending Existing GuardrailClosing the gap between two runs of guardrailShortening the guardrail post spacingNew strain pole placed behind existing guardrail – verify existing guardrail meets all current standardsMust consider existing object that is being protected and new support to be installed. The appropriate length needs to be designed both upstream and downstream of the objectsWhen Guardrail is extended the anchor at the end is removed, new guardrail added and new anchor must be installed to current standards.If new guardrail is close to upstream or downstream existing – make judgment on whether closing the gap to create one continuous guardrail is appropriateShortening the post spacing – the offset behind guardrail to pole or object should be 4 ft or more to allow for deflectionIf offset can't be achieved review standards to determine allowable min post spacingIn extreme cases a barrier wall may be required.
Coordinate early with power companies on power source locationsWhat to show on plans Power source location and POW routing on plans - Show station for proposed power service locationThis power service location is the Demarc. b/t MDOT and the power company
Placement Guidelines give more of an overviewField Location Considerations gives details on spacing, #s, etc. - specific requirements that affect the number and way things are shown on the plan sheets. These sections are included throughout the manual in chapters of the other devices / ITS components
Goal / Concept – what the device is for and how it fits in with MDOT operations – information that is helpful to the designer when doing an ITS design. Includes placement Guidelines for the three different area types and additional field location consideration that should be used for placement.
Contract Plans Include:Content, Sequencing & NumberingProject IDRevisionsModel SheetsStandard LegendStandard Details
Typical Workflow:ITS design may be standalone or incorporated into larger set of plansTypical workflow applicable for standalone ITS projects but also shows how ITS design is integrated into development of MDOT roadway/bridge projects.