Optimize Mobility

Mobility Performance Measures
Historical Mobility Index
Mobility Index
Electric Vehicle Charging Network
Statewide Mobility Dashboard
Traffic Volume Dashboard
Traffic Statistics Data

Mobility Performance Measures

  [X]
Key Points
Delay is increasing beyond the delay experienced in the first quarter of 2020 and 2019. This is due to returned traffic demand that was lost during most of 2020 and continued population growth within the state. But we are still not exceeding the 4% annual growth target delay.

Delay

Delay is the sum of additional travel time on major routes(Interstates, highways and arterials) in the state each month. Delay is measured as the difference between the actual travel time and free-flow travel time.

Target: Delay should not grow by more than 4% annually

  [X]
Key Points
Our roads are still seeing very high speeds which are different from the first quarter of 2020 and 2019 conditions. A route can be considered reliable even if the speeds are low (reliably slow). Because speeds generally remain high, any reduced speeds negatively impact the reliability. This is likely why we are starting to see reliability trend downard in recent months.

Reliability

Reliability is the percent of miles on major routes that were uncongested and performed consistently with historical speeds during the peak hour.

Target: 90% of the system will be reliable.

  [X]
Key Points
This measure is currently focused on the I-15 corridor in Salt Lake County. It is a measure of how people move through the I-15 corridor using both vehicles and transit. The target of 10 percent transit trips represents an effort to "Optimize Mobility" by utilizing both roadway/vehicle capacity and transit system capacity. Impacts on transit ridership in 2020 and 2021 due to the pandemic are expected.

Mode split

The stacked bar chart on Mode Split below shows average daily trips by people in vehicles and on UTA transit in the I-15 Corridor in Salt Lake County. The Mode Split performance measure score is determined by dividing the actual percentage of transit trips by the target percentage transit trips and multiplying by 100.

Target: 10 percent of all trips in the corridor are transit trips.

  [X]
Key Points
  • Observations are taken every 10 minutes by the RWIS stations across the state to measure vital road and storm statistics; i.e; Snowfall rate, Roadway Temperature, wind gusts.
  • Goal is to have a minimum of one RWIS per Maintenance Site, currently we have 63/71 Compatible Maintenance Stations.
  • RWIS are capable of providing site specific winter summaries to assist the Maintenance Stations in tracking and measuring performance on a storm by storm basis.

Snow and Ice Removal Efficiency

The percentages shown represent current winter efforts success in our ability to maintain roadways free of snow and ice.

Target: (B+) 87% or greater for the acceptable and exceptional categories.