J-TURNS Formerly Known As Superstreets
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J-TURNS Formerly Known As Superstreets

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J-TURNS Formerly Known As Superstreets




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Presentation on theme: "J-TURNS Formerly Known As Superstreets"— Presentation transcript:

Slide1

J-TURNS

Formerly KnownAs Superstreets

ByTanya Bankston

Slide2

J-TURNS

Eliminates Left-Turn and Through Movements from the Minor Approach -- Forcing all Vehicles to Turn Right% of Left and Through Movements on the Minor Street are Low

FHWA

Slide3

WHY J-TURNS?

Isolated Directional Median OpeningUS 61 between E. Cornerview St. and Roddy Rd. in Gonzales, LA

Slide4
ANSWER

Improve SafetyLess Travel Time

Economically BeneficialEnvironmentally Responsible

Veterans Memorial Highway in Kenner, LA (Constructed in 2005)

Slide5

WHY J-TURNS?IMPROVE SAFETY

Replaces Right Angle Conflicts with Less Severe Conflicts Reduces the Number of Conflict Points

Slide6

WHY J-TURNS?IMPROVE SAFETY

NCHRP Report 650

Slide7

WHY J-TURNS?IMPROVE SAFETY

NCHRP Report 650

Overall: Conflicts Points from

42 to 24

Slide8

WHY J-TURNS?LESS TRAVEL TIME

Reduces “Wait Time” or DelayIncreases Roadway CapacityDivides an 8 phase operation into 4 separate intersections each operating as a 2 phase signal

Slide9

WHY J-TURNS?Economically Beneficial

Preserves the Existing FacilityMinimal Roadway Construction & Right-of-Way Procurement

Provides Good Access to Both Sides of the Main Road for Development

Slide10

WHY J-TURNS?Environmentally Responsible

Less Time Spent Idling at a Red LightReduction in Environmental Pollutants (exhaust fumes / fuel usage)

Less Property Impacted by Construction and the Permanent Facility

Slide11
OTHER STATES

North Carolina

MarylandMichiganMinnesotaTexas

FloridaIowaMissouri

North Carolina State University

Slide12
MISSOURI J-TURN VIDEO

NCHRP Report 650

Slide13

J-TURN PROJECTS

In ConstructionUS 90 in Lafayette, LA (District 03)Proposed

Bullion Crossing (US 61 and LA 42) in Prairieville, LA (District 61)StudiesLA 21 in Covington, LA (District 62)

US 190 in Covington, LA (District 62)

US 71 in Shreveport, LA (District 04)

US 165 in Pineville, LA (District 08)

Slide14
J-TURNS

DOTD’s Deputy

Secretary, Eric Kalivoda

Supports

J-Turns

Slide15

QUESTIONS???