Mobility & Congestion

How Congested are our Roads? View the Congestion Scorecard

Congestion

The OKI region’s quality of life and economic competitiveness are closely related to the degree to which the transportation system is able to provide an acceptable level of mobility.  Congestion is the level at which transportation system performance is no longer acceptable due to traffic interference.  This traffic interference may be recurring or non-recurring congestion.  Recurring congestion is caused by consistently excessive travel demand as compared to available roadway capacity.  Sometimes, poor signal timings, poor access management and roadway geometric deficiencies contribute to reduced capacity.  Non-recurring congestion occurs due to traffic incidents, adverse weather or road construction.  The relative severity of travel congestion is measured by travel time, speed and the calculated measure called travel time index.

Congestion Map


Travel Time

When planning a trip, it’s a good idea to build in some extra time as a cushion against the effects of heavier-than-normal traffic or other unforeseen events. Transportation planners have a term for this cushion: buffer index. The buffer index measures the variability of travel time along a corridor.

The following map and charts show the buffer index during AM and PM peak periods. It represents the extra time (buffer) travelers should add to their average travel time when planning trips. This is the extra time between the average travel time and near-worst case travel time (95th percentile). The buffer index is expressed as a percentage and its value increases as reliability gets worse ((95% Travel Time – Average Travel Time) / Average Travel Time).

For example, a buffer index of .4 (40 percent) means that, for a 20-minute average travel time, a traveler should budget an additional 8 minutes (20 minutes × 40 percent = 8 minutes) to ensure on-time arrival most of the time.

Data Source: INRIX, Inc. Performance Summaries for Selected Corridors during weekdays in 2014.  

Buffer Index: The buffer index is expressed as a percentage and its value increases as reliability gets worse ((95% Travel Time – Average Travel Time) / Average Travel Time).

For example, a buffer index of .4 (40 percent) means that, for a 20-minute average travel time, a traveler should budget an additional 8 minutes (20 minutes × 40 percent = 8 minutes) to ensure on-time arrival most of the time.

Planning Time: How much total time in minutes a traveler should allow to ensure on-time arrival (Average Travel Time + Buffer Time).

Weekday Peak Period Speeds and Travel Time Index Values


Annual Transit Ridership

Average Monthly Transit Ridership

Daily Hours of Delay

Average Incidence Clearance Time

Percentage of Congested Vehicle Miles Traveled

Congestion Scorecard
Cost of Delay (Daily Value of Wasted Time) 88,184
Vehicle Miles Traveled 30,312,958
Congestion Vehicle Miles Traveled 6,293,356
Percent of Congested Vehicle Miles Traveled 21%
Cost of Delay (time) 2,033,968
Cost of Delay (fuel) 2,521,647
Environment Scorecard
Ozone Concentrations 0.075 (2012-2014 Annual Average)
Fine Particulate Concentrations 10.50 (2012-2014 Annual Average

 Air Quality Benefit From CMAQ Projects VOC NOx PM2.5
2-year (2014-2015) Project Emission Reductions in tons 33.73 98.58 0.94
4-year (2012-2015) Project Emission Reductions in tons 67.56 203.39 2.24
Infrastructure Scorecard
% of Bridges With Low Sufficiency Rating 4% (2015)
# of Bridges Functionally Obsolete 492 (2015)
# of Bridges Structurally Deficient 102 (2015)
% of Interstate in Good Condition 76% (2013- 2014) -
% of Non-Interstate in Good Condition 32% (2013-2014 -
Safety Scorecard
11-15 annual average Trend
Fatalities - Region 125
Fatailities - Ohio 92
Fatailities - Kentucky 26
Fatailities - Indiana 7 no change
Fatality Rate - Region 0.57
Fatality Rate - Ohio 0.58
Fatality Rate - Kentucky 0.47
Fatality Rate - Indiana 1.35
11-15 annual average Trend
Serious Injuries - Region 1,156
Serious Injuries - Ohio 998
Serious Injuries - Kentucky 158
Serious Injuries - Indiana no data no data
Serious Injury Rate - Region 4.13
Serious Injury Rate - Ohio 4.89
Serious Injury Rate - Kentucky 2.01
Serious Injury Rate - Indiana 4.21 no data
Bicyle/Pedestrian
Safety Scorecard
11-15 annual average Trend
Bicycle Fatalities 2 no change
Bicycle Serious Injuries 24
Pedestrian Fatalities 19
Pedestrian Serious Injuries 115
Percent of all Transportation Injuries from Bicyclists or Pedestrians 5% not enough data
Percent of all Transportation Fatalities from Bicyclists or Pedestrians 16% not enough data
11-15 annual average Trend
Bicycle and Pedestrian Fatalities and Serious Injuries - Region 2
Bicycle and Pedestrian Fatalities and Serious Injuries - Ohio 24
Bicycle and Pedestrian Fatalities and Serious Injuries - Kentucky 19
Bicycle and Pedestrian Fatalities and Serious Injuries - Indiana no data nodata