2010-09 njdot roadway systems

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Division of Traffic Engineering & SafetyDivision of Traffic Engineering & Safety ureau o ranspor a on a a eve opmenureau o ranspor a on a a eve opmenRoadway Systems SectionRoadway Systems Section

FunctionsFunctions and Contactsand Contacts



Strai ht Line Dia ramsStrai ht Line Dia ramsRoad inventory obtained by the Roadway Systems Section staff and ourhired consultants is portrayed in the Straight Line Diagrams (SLD) - the

available within the New Jersey Department of Transportation (NJDOT).

’ . ,manually and limited to the State Highway System.

Toda the SLDs are roduced throu h a s eciall desi ned com uterprogram and include all public roads in New Jersey.



Strai ht Line Dia ramsStrai ht Line Dia ramsSLDs are now distributed to our customers on a CD-ROM. The CD-ROM is

a collection of static PDF files using a piece of software called Adobe Adobe (tm)

to access t e es. e user o t e - can not man pu ate t s ata

in any way - basically, what they see is what they get.

connected to a dynamic “on-line” SLD Program housed in our dedicatedserver. This program allows the user to produce a customized SLD andperform queries using geographic and attribute data stored in the SLD

database.

Order of contacts for customerOrder of contacts for customerquestions:questions:

1. Donald Perry

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Standard Route Identif ier (SRI)Standard Route Identif ier (SRI)

The Standard Route Identifier (SRI) is a standard, consistent and

uniform way of identifying every state, county, municipal and authorityroa way w t n t e tate. t s a ten ten yte yte a p a a p a- -numer c numer c e e w t n a

BTDD databases uniquely identifying the roadway and associated dataattributes. The SRI can be used to locate any linear and / or pointattributes alon an roadwa . The SRI rocess is currentl used in the

Department’s Geographical Information System (GIS) and willultimately be adopted by all database developers within the NJDOT.

OrderOrder ofof contactscontacts forfor customercustomer

1. Donald Perry

2. Michael G. Castaldo

.



Linear Referencing Systems (LRS)Linear Referencing Systems (LRS)

The Linear Referencing System (LRS) is a major component of theHighway Performance Monitoring System Program (HPMS). The LRSconsists of a link link data file and a node node data file with a network coveringall National Highway System Routes (including connectors), UrbanPrincipal Arterials, Rural Principal Arterials and Rural Minor Arterials.

The LRS is maintained in the GIS environment which allows for

production of the final deliverable to the FHWA - individual county’


ques onsques ons::1. Donald Perry - (5) 2945




Highway Performance Monitoring System (HPMS)Highway Performance Monitoring System (HPMS)

e g way er ormance on or ng ys em prov es

essential data on highway conditions, performance and usage aswell as analytical products to the entire transportation community.

The HPMS was developed in 1978 to serve highway transportation

data and analytical needs at the national level. It replaced numerousuncoordinated annual State data reports as well as biennial specialstudies conducted by each State, resulting in a reduction in annualState data reporting.

Enhancements to the HPMS made in 1993 focused on programrequirements mandated by the ISTEA (Intermodal SurfaceTransportation and Efficiency Act) of 1991, the 1990 Clean Air Act

Amendments and ex anded trans ortation communit data needs.



Highway Performance Monitoring System (HPMS)Highway Performance Monitoring System (HPMS)

The HPMS has two distinct elements - a field element and an officeelement. In the field, technicians gather extensive road inventorydata 82 items on sam le sections. Sam le sections are stratified in

many different groups/panels which are intended to represent thedifferent types of roadways throughout the state.

a a co ec e n e e s rans erre roug spec a y es gnesoftware) into the HPMS database maintained in the office. Severaledit routines are performed against the field data to verify accuracy.

Order of contacts for customerOrder of contacts for customeruestionsuestions:

1. Anthony Varone2. Shahid Haji



Vehicle Miles Traveled (VMT) EstimatesVehicle Miles Traveled (VMT) EstimatesAs with all states, New Jersey’s official estimate of vehicle miles traveled(VMT) is a product of the HPMS Program. VMT is simply a measurementof the amount of traffic on a given mile of roadway. Deriving NewJersey’s VMT estimate involves multiplying the traffic volume in each

HPMS section, the section length and expansion factor, then summing theproduct to yield the VMT for any desired aggregation level.

VMT estimates are a key component of the Federal-Aid Highway fund

apportionment formulae. They are central to estimating several of theDe artment’s erformance indicators such as vehicle crash and fatalitrates. VMT are also used in tracking Clean Air Act requirements and arecritical in the analysis that support the Condition and Performance

Reports to Congress.

OrderOrder ofof contactscontacts forfor customercustomerquestionsquestions::

.

2. Shahid Haji



Public Roadway Mileage and CertificationPublic Roadway Mileage and Certification

road inventory efforts. A public road is any road or street owned andmaintained by a public authority and open to public travel. Each year inresponse to the Federal Aid Policy Guide Transmittal 1, dated December

9, 1991, the BTDD acts as the designee of the Governor and provides the

FHWA with New Jersey’s Certification of Public Road Mileage. Thisfigure represents mileage as of the end of a calendar year.

New Jersey has approximately 38 38,,000 000 miles miles of public roadways. Certifiedpublic mileage figures, both current and historical, are available on theDe artment’s web site and can be dis-a re ated b either functional

classification or jurisdiction.

questionsquestions::1. Anthony Varone

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Large Truck Network (National Network and ReasonableLarge Truck Network (National Network and Reasonable

Access Routes & Truck Routin Access Routes & Truck RoutinNew Jersey’s Large Truck Network is maintained by the BTDD andportrays a roadway network of through routes (National Network)

” ” ’ ’ ,,

long long and and double double bottom) bottom) are permitted to travel. Prohibited travelroutes are also shown on the network.

A description of the Large Truck Network is available on theDepartment’s web site (http(http:://www//www..statestate..njnj..us/transportation)us/transportation) and also in a

map format distributed by the BTDD. This network and associatedregu at ons are current y un er rev ew or poss e rev s ons. ttimes, calls from the trucking community are referred to the BTDD fortrucking routings. Routings should be given in accordance with themost current Lar e Truck Network ma .



2. Donald Perry



Digital Roadway Imaging (Including Photolog and Videolog)Digital Roadway Imaging (Including Photolog and Videolog)The BTDD performs Digital Roadway Imaging (DRI) activities along allState Highway and Authority Routes in-house. This function provides adriver’s perspective of road conditions (geometry and access points) andserves as visual documentation to our road inventory activities. Prior to

used. Both of these systems are still maintained for historical

documentation and are used extensively by the legal community (bothNJDOT and others) in litigation cases involving the State Highway Systeman n con emna on cases.

The current videolog available to users at NJDOT, collected by

consultants, captures digital images while cruising at normal driving,along with other information such as GPS readings and date/time.

questionsquestions::1. Michael G. Castaldo

. o a e



Functional Classification SystemFunctional Classification SystemDevelopment / maintenance of New Jersey’s Functional ClassificationSystem is performed in accordance with procedures set forth in the ISTEAof 1991 Section 1006 (c). Functional Classification is the process by whichall public roadways are grouped into categories based on the service they

provide motorists with a high degree of access. On the other hand, larger

roadway (Interstates and freeways) provide motorists with a high degree ofmobility.

Another factor in the development of the Functional Classification System

is Census data. This data determines the development of the Urban.

Development of the Functional Classification System is performed in

cooperation with County and Metropolitan Planning Organization (MPO)officials. Functional Classification System statistics are available on the

Department’s web site.

OrderOrder ofof contactscontacts forfor customercustomer.

2. Donald Perry




Federal Aid System (Including National HighwayFederal Aid System (Including National Highway

System & Surface Transportation Program)System & Surface Transportation Program)

Functional Classification is the foundation for the Federal Aid System.

This Federal Aid System has three (3) major elements - National HighwaySystem (NHS) routes, Surface Transportation Program (STP) routes and

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performed in accordance with procedures set forth in the ISTEA of 1991Section 1006 (a) and the NHS Designation Act of 1995.

New Jersey has approximately 2 2,,100 100 miles miles of NHS designated roadways.Roadways not designated as NHS and functionally classified higher than

Rural Minor Collector fall into the STP designation.

Roadways functionally classified as Local (both Rural and Urban) andura nor o ec ors are es gna e as on- e era rou es. s w

the Functional Classification System, the NHS is developed in cooperationwith County and MPO officials. Establishment of the NHS, along with theSurface Transportation Program is the basis for funding transportation

projects.

OrderOrder ofof contactscontacts forfor customercustomer.

2. Donald Perry




Route MilepostingRoute MilepostingMileposting of State Highways is performed to establish beginning, end

and intermediate points along each route. These measured distances andpoints result in the installation of the small green placards along the

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road inventory data and measurements obtained from Distance MeasuringInstruments (DMIs) installed in field vehicles.

Federal guidelines require BTDD to establish the location of 11/ /10 10 milepostplacards on all Interstate Highways and 11/ /2 2 milepost placards on all other

State Highways.

We also milepost new routes, emergency evacuation routes andemergency service patrol (ESP) routes.

OrderOrder ofof contactscontacts forfor customercustomerquestionsquestions:


2. Donald Perry



Project ManagementProject ManagementProject management is performed by several members within theRoadway Systems Section. Currently, we have contracts withconsultants to produce the Straight Line Diagrams (SLD), support

g way er ormance on or ng ys em an unc ona

Classification Programs and collect and process traffic count and othertransportation related data .

,with Data warehouse and maintenance functions. This contract will bea continuation of the current Data warehouse and Maintenance project.

Most of these contracts are multi-year contracts. Included in ourProject management tasks are the development of a project Scope of

Work (SOW), solicitation and review of Expressions of Interest (EOI),consultant selection, work assignment and review, monitoring and



2. Donald Perry



Hi hwa T e Desi nationsHi hwa T e Desi nationsA Highway Type designations is an element used in project design and

is typically shown on the keysheet of the project’s plan. A request fora roa way s g way type s usua y sent to t e rom one o t e

Department’s Design Units.

-thethe functionalfunctional classificationclassification ofof thethe roadwayroadway andand whetherwhether thethe roadwayroadway isisdivideddivided oror undividedundivided.. A set of codes, established by the FHWA, is used

to define the Highway Type of any given roadway.



2. Donald Perry

3. nt ony arone



Highway Maintenance Management System (HMMS)Highway Maintenance Management System (HMMS)

The Hi hwa Maintenance Mana ement S stem is used b NJDOT’sMaintenance forces to develop estimates for budgets, schedules,maintenance crew work assignments and various asset managementreporting.


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2. Donald Perry



Road InventoryRoad Inventoryoa nven ory s per orme rou ne y on a pu c roa ways n ew ersey n

accordance with procedures set forth in the Bureau of Transportation DataDevelopment’s (BTDD) Roadway Roadway Inventory Inventory Field Field Manual Manual . Primarily, it is carriedout to provide input to the Annual Mileage Certification.

Years ago, this function was performed entirely by our staff.

Today, road inventory is performed on the State Highway System by staff inthe RoadwayRoadway SystemSystem SectionSection. A consultant contract covers road inventory onother roadway - i.e.: County and Municipal Routes.

Typical road inventory data collected includes number of lanes, pavementwidth, presence / width of shoulder, presence / type / width of median, namesof intersecting streets, speed limit and length of road.


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2. Donald Perry



Data Warehouse and MaintenanceData Warehouse and Maintenance

MAINTAIN A CONTINUED EFFORT IN MANAGING, UPDATING ANDMAINTAINING BTDD’S ROADWAY INVENTORY DATABASE.(INCLUDING ASSET MANAGEMENT DATA) THROUGH:

1. YEARLY INVENTORY PROGRAMS

2. CONSULTANT CONTRACTS

3. UPDATES RECEIVED FROM OTHER SOURCES


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2. Donald Perry

3. Anthony Varone



Standard SLD Attributes: number of lanes

pavement width

shoulder width median type

median width

traffic signal locations

interchange locations

intersecting roadways

stream crossings

milepost start/end

highway types (divided, undivided, etc.)



HMMS Features: Inlet

Manhole Highway Lighting (on wooden utility poles only)

Attenuator

,

Delineator

Guide Rail

Island Pavement

Raised Pavement Markings (RPM)

Roadside Noise Wall

Retaining Wall

Longitudinal Rumble Striping

Shoulder Type

NJDOT Jurisdiction Roadway Signs

Sign Mounts



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FunctionsFunctions and Contactsand Contacts

2010-09 njdot roadway systems

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