Program Development: 
Performance Management: Data Collection


The Data Collection Group is responsible for the collection, analysis, maintenance, reporting, publishing, and monitoring of various technical transportation related data. This data set includes: Traffic Data (AADT), Skid Resistance Data, Off-System Highway Performance Monitoring System (HPMS) Sample Sections Pavement Condition Data, Roadway Functional Classification/ NHS Data, and All Roads Network of Linearly Referenced Data (ARNOLD).
Primary objective of this group is to support the Department’s goals, of  Zero Fatalities, Optimizing Mobility, Preserving Infrastructure; and to deliver timely/accurate data to all stakeholders and HPMS.


The following are some of our current initiatives for 2018:
  • Short-Term Traffic Count Request For Proposal (RFP)- The purpose of this RFP is to select a qualified vendor to collect over 2,450 short-duration counts (48 hour) in support of our Traffic Analysis & Monitoring Program and the Federal Requirements.  This contract will result possibly in a five (5) year agency contract between UDOT and the selected vendor(s), with no renewable options.
  • Continuous Count Stations(CCS) Field Application Development- The CCS Field Collector App is being developed to be utilized as a primary tool to help deploy work orders for repairs from the office, and give field technicians access to full details of each site for hardware inventories, and the capability to update and log repairs and maintenance. Helping work towards a paperless environment, as well as utilizing GIS tools, will allow us to not only more quickly and easily track the CCS system, but bring transparency and enhance our performance measures with data readily available to the department.
  • Continuous Count Stations (CCS) Expansion in Utah County- Additional installations of  CCS in several locations on I-15 and other major routes in Utah County. These additional installations will help to fill the existing gaps in our CCS coverage and will also server MAG for their planning purposes in Utah County.  This project is funded by the Mountainland Association of Government (MAG) and this project will go for advertisement this summer.
  • Solar Energy Development on UDOT's Right-Of-Way Project (ROW)- As part of a TRB implementation project, UDOT began to explore ROW renewable energy solar installations.                    In December of 2017, UDOT issued a Request for Information (RFI) asking about the feasibility of pursuing solar projects.  UDOT received six responses, all of which supported putting renewable energy on UDOT ROW and reported that UDOT could break even or even save money through a power purchase agreements (PPA). UDOT is now moving forward with developing the planning document and then a Request for Proposals (RFP).
  • Evaluation of  Skid Resistance Data and Pavement Texture Data- Skid resistance and pavement texture data are important measures of pavement surface characteristics which ultimately affects the safety of every commuter during wet pavement condition. However, there is little understanding of the correlation between the two and greater role that texture could play in ensuring safer highways. If the relationship holds true for road conditions in Utah, then pavement texture data can be used as a screening tool to develop a more strategic and targeted skid data collection plan for annual skid operation in high-risk areas and save time and money. 


  • 2017 Annual Average Daily Traffic (AADT) delivery for HPMS by May 15, 2018.
  • 2017 Fed-Aid routes HPMS sample sections IRI, Rutting, Faulting, and Percent Cracking submitted by May 01, 2018.
  • Skid Data collection and processing. Over 3,500 counts collected by May 9, 2018.
  • Mid-Census Functional Class Changes are done March 2017.
  • All Roads Network of Linearly Referenced Data (ARNOLD). 15 Counties done out of 29 so far.
  • Traffic Volume Trend Information.                         
  • Continuous Count Stations(CCS) Master Plan completed, December 2017.
  • Continuous Count Stations(CCS) Concept Report done and funding secured from Mountainland Association of Government(MAG). Project goes for advertisement this summer.
  • Peer Exchange on Solar Energy Development on Right-Of-Way Project done on March 14, 2018.
  • Evaluation of Mobile Phone Applications to Measure Pavement Roughness Index done February, 2018.


Traffic Data & Monitoring Programs

A traffic monitoring program is important from a statewide perspective to meet Federal and State requirements and is used to monitor travel primarily on State system and Federal-Aided roads. UDOT’s Traffic Monitoring Program is designed to collect primarily three types of data: volume, classification, and speed. Each type of data can be used for many purposes, including tracking traffic volume trends on important roadway segments; providing input to traffic management and traveler information systems; determining truck travel patterns; providing input for safety and design studies along with roadway performance monitoring; and for providing data for programs such as the Highway Performance Monitoring System (HPMS). Traffic data reported to FHWA are used to apportion funding to States from the U.S. Highway Trust Fund. Proper support and funding of traffic counting programs is critical to ensure the State data collection remains up to date and is providing the best possible data.

Skid Resistance

Skid resistance data is collected statewide for both network and project levels.  This data is collected as part of the UDOT Pavement Friction Management and Highway Safety Improvement Program and per FHWA Technical Advisory.  Skid data is typically collected at 2 locations/mile including bridge decks, and as needed on mainline highways and according to ASTM E274. Project Level skid data collection is completed as requested on bridge decks and per UDOT Standard Specification 03375. Skid data and wet pavement crash analysis are performed and the data is uploaded to Uplan.

5-Year Skid Condition Data on Interstates 

5-Year Skid Condition Data on Non-Interstates 

All Roads Network of Linearly Referenced Data (ARNOLD)

The All Roads Network of Linearly Referenced Data (ARNOLD) requires all State DOTs to provide a geospatial Linear Reference System (LRS) network for all public roads as well as dual carriageways on divided highways. ARNOLD became a requirement for HPMS in 2013  and is a multi year effort that will provide the baseline for the geospatial linear roadway features.  These features are used to report the location and extent of current HPMS data items, and are used to validate each State’s certified public mileage.

Functional Class & NHS Changes

UDOT’s major update of the Functionally Classified (FC) Roadway System is based on the U. S. Census. Major 10-year update initiated after the release of the census data in 2010. In additional to the major decennial census update, there is a mid-census review and an opportunity for annual adjustments. Decennial updates begin after the US Census Bureau releases information on urban and urbanized areas based on population density. UDOT reviews and coordinates all needed urban boundaries adjustment and FC changes with local government and FHWA. 

Pavement Condition Data Collection on Fed-Aid HPMS Sample Sections

IRI, Rutting, Faulting, and Percent Cracking data is collected on fed-aid off-system HPMS sample sections located statewide. This data is collected within a two-year cycle and necessary processing and analysis is done before to be submitted to HPMS annually.  

Evaluation of Mobile Phone Application to Measure International Roughness Index (IRI)

An evaluation was conducted on behalf of the Utah Department of Transportation (UDOT), to identify and evaluate the potential for using mobile phone applications to collect Pavement Roughness Index (IRI) data. The results of the study show that mobile phone applications are an emerging technology that can be used as a supplement to UDOT’s truck mounted laser data collection. Opportunities were also identified to use IRI mobile phone apps for related areas such as Maintenance Crews, Construction Inspectors, Bridge Ride Indexes, and Local Agencies. Several conclusions were generated from the literature search, data collection, and evaluation process, including the following

Team Members

Data collection employees are available to answer your questions and provide technical information and assistance. Staff contact information and their main responsibilities are listed below:
Pavement Condition & Local Systems Unit
·         Abdul Wakil, Pavement Condition & Field Inventory Engineer,
·         Jeff Ericson, Local Systems Inventory Supervisor,
Traffic Analysis Unit
·         Nicolas Black, Traffic Analysis Supervisor, Traffic on Utah Highways
·         Todd Hadden, Truck Statistician and Project Traffic Reports,
Traffic Monitoring Unit
·         Devin Routson, Traffic Monitoring Supervisor,
·         Stephen Hoffman, Traffic Monitoring Specialist,
·         Sam Neumeier, Continuous Count Station Maintenance Coordinator,