us 74 widening project - ncdot.gov...crash analysis results us 74 widening project 19 total crashes...
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US 74 Widening ProjectRocky River Road to Secrest Shortcut Road
June 25, 2018
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AgendaUS 74 Widening Project
• Introductions• Project Overview and Background• Project Resources• Traffic Conditions and Alternatives• Synchronized Streets• Traffic Analysis• Next Steps• Questions
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OverviewUS 74 Widening Project
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• NCDOT State Transportation Improvement Program (STIP) Project U-5764– Widen US 74 from Rocky River
Road to Dickerson Boulevard from a 4-lane, median-divided facility to a multi-lane, median-divided facility.
• NCDOT STIP Project U-5931– Improve the intersection of US
74 and Secrest Shortcut Road
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OverviewUS 74 Widening Project
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• Heavily traveled corridor• Commercial, social, and
recreational uses• Major commuter route• Pedestrian
accommodation issues
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Project BackgroundUS 74 Widening Project
• The Union County 2025 Comprehensive Plan (2010) noted the need to revitalize this portion of US 74.
• The Union County Multimodal Transportation Plan (2014) listed among its priorities the need to increase densities along the US 74 corridor and provide streetscapes to promote a more active, mixed-use environment and to provide intersection improvements along the corridor.
• The Charlotte Regional Transportation Planning Organization (CRTPO) 2040 Metropolitan Transportation Plan (MTP) (2014) includes the project.
• The project is included in the current (2018) North Carolina STIP.
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Project Resources
US 74 Widening Project
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Project ResourcesUS 74 Widening Project
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Traffic ConditionsUS 74 Widening Project
• Existing Daily Volumes = 40,000 to 54,000• Future (2040) Daily Volumes = 44,000 to 59,000
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0
10,000
20,000
30,000
40,000
50,000
60,000
70,000
Rocky Rive
r Rd
Wilson
Ave
John
Moo
re Rd
Wellness Blvd
Carroll S
t
Roland
Dr
Williams Rd
Han
over Dr
Dicke
rson
Blvd
Secrest S
hortcu
t Rd
DAILY TR
AFFIC VO
LUME
US 74 Daily Traffic Volumes
Existing Future
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Alternatives StudiedUS 74 Widening Project
• Alt 1: Six-Lane Conventional
• Alt 2: Four-Lane Synchronized Street– Dismissed based on
forecasted volumes• Alt 3: Six-Lane
Synchronized Street
9Source: Federal Highway Administration (FHWA)
44,000
59,000US 74
Signalized Synchronized Street
UnsignalizedSynchronized Street
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Synchronized Street ConceptUS 74 Widening Project
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FHWA uses the term RCUT (Restricted Crossing U-Turn).Some states use the term J-Turn, Reduced Conflict Intersection, or Superstreet.
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Synchronized Street BenefitsUS 74 Widening Project
• Safety!!– 15 to 46 percent total crash reduction– 22 to 63 percent injury and fatal crash reduction
• Improved Pedestrian Accommodations– Shorter crossings– Opportunity for more crossings
• Reduced delay• Improved Signal Coordination
– Can use signal progression to control speeds
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Synchronized Street BenefitsUS 74 Widening Project
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Conventional Intersection32 points
Synchronized Street Intersection14 points
Reduction in Conflict Points
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Synchronized Street BenefitsUS 74 Widening Project
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Mid-block Pedestrian CrossingsIntersection Pedestrian Crossing
Improved Pedestrian Accommodations
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Synchronized Street BenefitsUS 74 Widening Project
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Synchronized Street
Conventional
Signal Phases Two EightSpeeds Controlled by
signal progression
“Controlled” by posted speed
limitQueues Moderate Long
Overall Improved Traffic Operations
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Synchronized Streets in NCUS 74 Widening Project
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Becoming the State’s Default Design for Arterials
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Traffic Analysis ResultsUS 74 Widening Project
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No‐Build 6‐Lane Conventional
6‐Lane Synchronized
StreetAM PM AM PM AM PM
US 74 Eastbound 8:33 8:16 8:52 7:40 6:42 6:14US 74 Westbound 7:37 8:20 7:26 7:53 6:31 6:29
Peak Hour Travel Times
6‐Lane Synchronized Street Design ProvidesAverage Travel Time Savings of
01:32 or 18% in the AM Peak Hour and 01:25 or 19% in the PM Peak Hour
Compared to 6‐Lane Conventional Design.
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Traffic SimulationUS 74 Widening Project
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6‐Lane Conventionalbetween Dickerson Blvd and Secrest Shortcut Rd
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Traffic SimulationUS 74 Widening Project
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6‐Lane Synchronized Streetbetween Dickerson Blvd and Secrest Shortcut Rd
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Crash Analysis ResultsUS 74 Widening Project
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Total Crashes
Total Crash Rate
Statewide Crash Rate
Critical Crash Rate*
Total 1,177 425.61 231.78 247.02Fatal 2 0.72 0.91 2.03
Non‐Fatal Injury 364 131.62 67.50 75.81Night 209 75.68 55.65 63.21Wet 188 67.98 42.17 48.77
Red Values Exceed Critical Crash Rates* Critical crash rate is based on other roads with similar characteristics.
Corridor Crash Statistics Over Previous 5 Years
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Crash Analysis ResultsUS 74 Widening Project
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TotalCrashes at
Intersections
No. of Potentially Preventable Crashes
PotentialCrash Reduction
Percentage
571 115 20%
Intersection Crash Statistics Over Previous 5 Years
Potential crash reduction of 20%is in line with 15 to 46 percent total crash reduction found in
other synchronized street corridors.
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Next Steps and ScheduleUS 74 Widening Project
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• Small Group Meetings – week of 6/25 followed by two-week comment period
• Right of Way – FY 2019• Let for Construction – FY 2021
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Questions?
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