P2P Link Corridor Performance-Based Needs Assessment Corridor - - PowerPoint PPT Presentation

AASHTO SCOP

Linking Planning to Programming

P2P Link

Corridor Profile Studies

Dave Perkins, Kimley-Horn

Corridor Performance-Based Needs Assessment Corridor Performance-Based Needs Assessment Pavement Bridge M obility Safety Freight Secondary Measures Statewide Performance and Needs (by others) Corridor Performance Segment Maps Package Solution Sets Formulate Potential Causes and Solutions Itemized Performance- Based Needs Prioritization

• f Needs and

Solution Sets Project Life Cycle and Risk Analysis P2P Link and Recommended Program Corridor Performance Segment Maps Additional Performance Measures To Diagnose Needs Performance Area Indices To Define Corridor Health and Identify Need Additional data sets as required to evaluate nature of need Drill Down Analysis Primary Measure

Pavement Bridge Mobility Safety Freight Performance Areas (related to MAP-21 and ADOT Annual Performance Report)

Performance Area

Performance Area Index

Measure Measure

Indicator Indicator Indicator Indicator

Measure

Indicator

Measure

Indicator

Secondary Measures Primary Measure

Indicator Indicator Indicator

Corridor and System Health

• Primary Measure used to evaluate relative health and indexed to make

comparative analysis to “healthy” conditions

• Secondary Measures provide diagnostic information to help identify causes

and potential solutions

Pavement Performance Area

Pavement Index

Directional Pavement S erviceability

Directional PS R Pavement Serviceability Pavement Distress

Pavement Failure

% of pavement below thresholds for IRI or Cracking

Pavement Hot Spots

PSR or PDI at critical threshold

Secondary Measures Primary Measure

• Primary M easure: uses combination of

PSR (International Roughness Index) and PDI (Cracking)

• Data Source: current ADOT pavement

database

• Calculation of Pavement Index:

combination of both directions of travel and weighted by # of lanes

• Pavement Index Score: Good/ Fair/ Poor

based on ADOT performance thresholds for PSR and PDI

• Secondary M easures: breaks PS

R into each direction and help identify “hot spots”

Segment

Pavement Performance Area Pavement Index

Directional PSR % Area Failure EB WB

40-1 4.10 4.03 4.12 4.5% 40-2 4.38 4.29 4.21 1.6% 40-3 4.11 4.06 4.04 0.0% 40-4 3.20 3.10 3.48 47.5% 40-5 3.64 4.15 3.20 33.3% 40-6 3.22 3.42 3.22 53.8% 40-7 3.56 3.50 3.57 0.0% 40-8 4.09 4.02 3.98 8.3% 40-9 4.27 3.93 4.24 2.2% 40-10 3.64 3.50 3.55 47.9% 40-11 3.26 3.54 3.63 31.3% 40-12 3.60 3.76 3.94 9.4% 40-13 2.85 3.73 3.52 41.7% 40-14 3.74 3.87 3.75 26.2% Wtd Avg 3.79 3.79 3.82 20.1% Good > 3.75 > 3.75 < 5% Fair 3.2 - 3.75 3.2 - 3.75 5% - 20% Poor < 3.2 < 3.2 > 20%

Bridge Performance Area

Bridge Index

Bridge Sufficiency Functionally Obsolete Bridges Bridge Hot Spots

Structurally Deficient Bridges (map locations)

Secondary Measures Primary Measure

Structural Evaluation Rating Deck Rating Superstructure Rating Substructure Rating Sufficiency Rating % Deck on Functionally Obsolete Bridges

• Primary M easure: uses 4 measures to

assess health of each bridge

• Data Source: current ADOT bridge database
• Calculation of Bridge Index: calculated for

each segment; weighted by deck area

• Bridge Index Score: Good/ Fair/ Poor based
• n established ADOT performance

thresholds

• Secondary M easures: will provide

supplemental information and identify “hot spots”

Segment

Bridge Performance Area Bridge Index

Bridge Sufficiency % Bridges Functionally Obsolete

40-1 3.66 81.10 5.7% 40-2 5.62 88.70 6.6% 40-3 5.84 94.52 25.2% 40-4 5.59 93.41 24.4% 40-5 5.13 94.85 21.0% 40-6 5.36 87.52 3.4% 40-7 6.72 68.64 0.0% 40-8 5.71 90.38 49.0% 40-9 5.21 87.19 0.0% 40-10 5.37 91.34 40.1% 40-11 5.81 95.07 23.5% 40-12 5.27 80.51 79.7% 40-13 5.50 97.11 0.0% 40-14 5.11 90.05 0.0% Wtd Avg 5.43 88.19 20.2% Good > 6.5 > 80 < 15% Fair 5.0 - 6.5 50 - 80 15% - 45% Poor < 5.0 < 50 > 45%

Mobility Performance Area

Mobility Index

Future V/ C Current V/ C

Peak Congestion

Design Hour Volume

Travel Time Reliability

Travel Time Index (car)

Multimodal Opportunities

Transit Model Non-S OV Opportunities

Future Traffic

Secondary Measures Primary Measure

Current V/ C Future V/ C % ADT Growth Travel Time Index (truck) Non-Recurring Congestion Vertical Grades

• Primary M easure: Considers both current

and future traffic volumes compared to capacity

• Data Sources: HPMS (current) AZTDM2

(future)

• Calculation of M obility Index: Average of

Current and Future Volume to Capacity Ratio

• Resulting M obility Index Score:

Good/ Fair/ Poor based on Highway Capacity Manual, using Urban/ Rural values for Level of Service

• Secondary M easures:
• Peak Congestion
• Future Traffic Volume
• Travel Time Reliability (cars & trucks)
• Multimodal Opportunities

Segment

Mobility Performance Area Mobility Index

Future Daily V/C Existing Peak Hour V/C Closure Extent (instances/ milepost/year/ mile) Directional TTI (all vehicles) Directional PTI (all vehicles) % Non- Single Occupancy Vehicle (SOV) Opportuniti es EB WB EB WB EB WB EB WB

40-1 0.43 0.59 0.26 0.25 0.18 0.09 1.22 1.06 1.34 1.12 9.6% 40-2 0.37 0.51 0.16 0.14 0.37 0.09 1.12 1.08 1.19 1.14 14.2% 40-3 0.55 0.72 0.37 0.38 0.43 0.22 1.29 1.18 1.48 1.33 19.8% 40-4 0.56 0.74 0.28 0.14 0.63 0.27 1.17 1.15 1.26 1.27 18.8% 40-5 0.44 0.60 0.24 0.13 1.90 0.90 1.17 1.15 1.26 1.27 15.1% 40-6 0.40 0.55 0.21 0.19 1.81 0.91 1.23 1.08 1.38 1.14 6.8% 40-7 0.37 0.51 0.17 0.16 1.74 0.82 1.11 1.08 1.17 1.14 6.8% 40-8 0.44 0.61 0.21 0.18 1.70 0.85 1.14 1.14 1.21 1.21 15.0% 40-9 0.41 0.57 0.19 0.20 1.51 0.70 1.10 1.12 1.16 1.19 12.9% 40-10 0.52 0.72 0.22 0.17 1.93 1.25 1.25 1.11 1.41 1.18 13.1% 40-11 0.53 0.73 0.24 0.22 1.85 1.13 1.16 1.11 1.25 1.18 8.9% 40-12 0.45 0.58 0.21 0.20 1.68 1.08 1.11 1.11 1.17 1.17 9.0% 40-13 0.52 0.66 0.29 0.28 1.77 1.13 1.10 1.12 1.15 1.19 14.4% 40-14 0.37 0.48 0.24 0.22 1.60 1.13 1.07 1.17 1.14 1.26 16.7% Wtd Avg 0.45 0.61 0.22 0.19 1.24 0.66 1.16 1.11 1.26 1.19 12.9% Good < 0.71 (0.56) < 0.26 < 1.15 < 1.3 > 17% Fair 0.71 (0.56) - 0.89 (0.76) 0.26 - 1.53 1.15 - 1.33 1.3 - 1.5 11% - 17% Poor > 0.89 (0.76) > 1.53 > 1.33 > 1.5 < 11%

• Primary M easure:
• Fatal crashes – economic cost of

$5.8M/ crash

• S

erious injury crashes – economic cost of $400K/ crash

• Data Source: Most current 5 full calendar years of

ADOT statewide crash database

• Calculation of Safety Index: Calculated frequency

and rate indices for each segment and for similar statewide segments; Combined equally weighted frequency and rate; Normalized against statewide average for segment type

• Resulting Safety Index Score: Above Average/

Average/ Below Average based on comparison to statewide average for segment type

• Secondary M easures: May help identify “hot

spot ” issues or how to improve safety in emphasis areas

Segment

Safety Performance Area Safety Index

% of Fatal + Incapacitating Injury Crashes Involving SHSP Top 5 Emphasis Areas Behaviors % of Fatal + Incapacitating Injury Crashes Involving Trucks

40-1 0.82 70.0% 10.0% 40-2 1.07 62.0% 24.0% 40-3 0.98 37.0% 11.0% 40-4 0.67 20.0% 8.0% 40-5 1.65 25.0% 25.0% 40-6 0.69 36.0% 18.0% 40-7 0.89 20.0% 10.0% 40-8 2.00 23.0% 15.0% 40-9 1.58 35.0% 12.0% 40-10 0.50 44.0% 16.0% 40-11 1.13 75.0% 13.0% 40-12 2.00 33.0% 0.0% 40-13 1.93 25.0% 25.0% 40-14 2.00 0.0% 25.0% Wtd Avg 1.19 39.2% 14.6% Good > 1.2 < 52 (45)% < 6 (12)% Fair 0.8 - 1.2 52 (45)% - 61 (53)% 6 (12)% - 14 (16)% Poor < 0.8 > 61 (53)% > 14 (16) %

• Primary M easure: focuses on two aspects of

travel time reliability

• Truck travel time index (TTTI) – ratio of

peak period to free-flow travel time [reflects typical peak period delay due to congestion]

• Truck planning time index (TPTI) – ratio of

total time needed for 95% on-time arrival to free-flow travel time [reflects extra buffer time needed]

• Data Sources: HERE truck travel time data

derived from GPS in trucks

• Data Update Schedule: Updates available

monthly through FHWA program

• Calculation of Freight Index: TTTI / TPTI
• Resulting Freight Index Score: Good/ Fair/ Poor

based on ADOT Annual Performance Report thresholds

• Secondary M easures: May help identify “hot

spot ” issues or freight restrictions

Segment

Freight Performance Area Freight Index

Directional TTI (trucks only) Directional PTI (trucks only) Closure Duration (hours/ milepost closed/year/ mile) EB WB EB WB

40-1 0.88 1.11 1.04 1.20 1.08 1.01 40-2 0.95 1.03 1.01 1.07 1.05 3.64 40-3 0.87 1.11 1.03 1.22 1.09 3.89 40-4 0.81 1.19 1.08 1.31 1.17 6.47 40-5 0.95 1.00 1.02 1.03 1.08 21.09 40-6 0.86 1.14 1.00 1.29 1.05 20.86 40-7 0.95 1.03 1.00 1.07 1.04 19.52 40-8 0.91 1.05 1.06 1.08 1.12 19.52 40-9 0.93 1.02 1.04 1.07 1.09 15.86 40-10 0.83 1.17 1.04 1.32 1.10 21.13 40-11 0.88 1.08 1.04 1.17 1.09 20.39 40-12 0.94 1.03 1.03 1.06 1.06 18.08 40-13 0.95 1.03 1.02 1.07 1.05 15.97 40-14 0.91 1.03 1.08 1.06 1.15 14.79 Wtd Avg 0.90 1.08 1.03 1.15 1.09 13.21 Good > 0.77 < 1.15 < 1.3 < 0.81 Fair 0.67 - 0.77 1.15 - 1.33 1.3 - 1.5 0.81- 18.55 Poor < 0.67 > 1.33 > 1.5 >18.55

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% Pavement Index Bridge Index Mobility Index Safety Index Freight Index 46% 5% 100% 35% 100% 41% 89% 0% 37% 0% 13% 6% 0% 28% 0% Poor (%) Fair (%) Good (%)

·

Finalize performance index and secondary measures to define baseline performance in Working Paper 2

·

Establish performance objectives to define needs and recommend solution sets

·

Perform a Life Cycle Cost and Risk Assessment to identify the most strategic recommendations for each corridor

·

Prioritize the recommendations using the P2P process and provide a prioritized ranking for consideration during the Long Range Plan update