cfi presentation for rmaces 2020 - final · 2020. 3. 5. · madison/eisenhower cfi 10 years later...
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3/4/2020
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Eisenhower Blvd &Madison AveLoveland, CO
CONTINUOUS FLOW INTERSECTIONS
MATT RUDER – CITY OF LOVELAND
JEFF TEMPLE – J-U-B ENGINEERS, INC
PROJECT AREALOVELAND, CO
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INTRODUCTION TO A CFI
• DISPLACED LEFTS
• LEFTS & THROUGHS TRAVELAT SAME TIME
• INCREASED CAPACITY
TRAFFIC SIGNAL OPERATION
• LET’S DO THE MATH:
• HERE’S THE PROBLEM. AT THE INTERSECTION, SEVERAL LANES OF CARS SIT AT ARED LIGHT WHILE ONLY TWO LANES ARE MAKING LEFT TURNS WITH THE GREENARROW.
• THREE LEFT-TURN INTERSECTION OPTIONS FROM MADISON ONTO EISENHOWER:
• PRE-CFI: 14 TRAFFIC LANES TOTAL2 MADISON LEFT-TURN LANES MOVING WHILE12 OTHER LANES SIT AND WAIT (86% AT RED LIGHT)
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TRAFFIC SIGNAL OPERATION• EXPANDED CONVENTIONAL USING DOUBLE LEFT-TURN LANES IN BOTH
DIRECTIONS:17 TRAFFIC LANES TOTAL4 MADISON LEFT-TURN LANES MOVING13 LANES SIT AND WAIT (76% AT RED LIGHT)
• CONTINUOUS FLOW INTERSECTION: BECAUSE BOTH LEFT-TURN ANDTHROUGH-TRAFFIC ARE MOVING SIMULTANEOUSLY, THE NUMBERS IMPROVESIGNIFICANTLY:
18 TRAFFIC LANES TOTAL10 MADISON LEFT-TURN AND THROUGH LANES MOVING WHILE ONLY8 OTHER LANES WAIT. (44% AT RED LIGHT)
A CONTINUOUS FLOW INTERSECTION (CFI) GETS MORE CARS MOVING!
TRAFFIC SIGNAL OPERATION
MADISON/US 34 PROJECT OBJECTIVES
• REDUCE DELAY
• OPERATE SAFELY
• TRAFFIC FLOW ON US 34
• REASONABLE CONSTRUCTION COST
• BUSINESS ACCESS
• COMMUNITY ACCEPTANCE
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PLANNING & DESIGN
• OBJECTIVES OF NEW INTERSECTION:• REDUCE DELAY – MAINTAIN FLOW ON US-34
• OPERATE SAFELY
• MAINTAIN BUSINESS ACCESS
• COMMUNITY ACCEPTANCE
CONVENTIONALDOUBLE LEFT
• PRO
• USER RECOGNITION
• LIMITED ROW AREA
• CON
• LOS E ON LEFTS
• BUSINESS DAMAGE
• FULL TAKES NW/SE
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CONTINUOUS FLOWINTERSECTION
• PRO
• FITS WITH ROW
• ELIMINATES LEFT PHASE
• REMOVES CONFLICTS
• REDUCES DELAY
• CON
• UNCOMMON IN US
• BIKE PED CONCERNS
• HOW TO MODEL DELAY
• COMMUNITY ACCEPTANCE
PROJECT CHALLENGES
LEFT-TURN OFFSET
• INTRODUCING SOMETHING NEW TO THE PUBLIC
• MAKE LEFT-TURNS USER-FRIENDLY
• ALL LEFT TURNS ARE PROTECTED MOVEMENTS
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INCREASED SIGNING & STRIPING
PROJECT CHALLENGES
• CFI’S ARE SIGN INTENSIVE
• ADDED SIGNS FOR ENTRANCE INTO MALL ON NORTHEAST CORNER
• ADDITIONAL PAVEMENT MARKING FOR LEFT-TURN CROSS OVER
• ALSO ADDITIONAL SET OF TRAFFIC SIGNAL POLES
PREPARING FOR THE WORST – POWER OUTAGE/ACCIDENT
PROJECT CHALLENGES
• ADDITIONAL CABINET WITH EMERGENCY TC PLAN CONES AND SIGNS
• CLOSE DOWN CROSSOVERS
• BATTERY BACKUP FOR INTERIM OUTAGE
• PROVISIONS FOR GENERATORS
• ENTIRE ADDITIONAL BACKUP CABINET
PROJECT CHALLENGES
SNOW PLOWING• HOW TO REMOVE SNOW?
• SPECIAL TRAINING
• DEDICATED BLADE AND TRUCK FOR CFI
• DE-ICING CONDUIT & BOXES INSTALLED
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ORIGINAL PAVEMENTSECTION
MADISON/EISENHOWER CFI 10 YEARS LATER
CURRENT PAVEMENT CONDITION
• PAVEMENT HAS HELD UP WELL
• FALL 2010 – BUILT
• 2011 – PAVEMENT CONDITION INDEX (PCI) IS 92
• 2014 – PCI IS 70 TO 79
• 2017 – PCI IS 70 TO 79
• 2020 – PCI IS ABOUT THE SAME
• 2024 – PLANNED OVERLAY
MADISON/EISENHOWER CFI 10 YEARS LATER
FUTURE NEEDS• CDOT OVERLAY IN 2012, NOTHING HAS BEEN DONE SINCE. USUALLY WOULD
CHIP SEAL IN THIS TIME, BUT STRIPING COST IS TOO HIGH
• PCI OF PAVEMENT SOUTH OF INTERSECTION (~70) IS LOWER THAN THE PAVEMENTNORTH OF THE INTERSECTION (~79).
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MADISON/EISENHOWER CFI 10 YEARS LATER TRAFFIC VOLUMES
Location 2010 Volume 2018 VolumeEisenhower, east of Madison 39,450 44,950Eisenhower, east of Lincoln 33,800 41,700Boise, north of Eisenhower 11,400 13,400
2017 ACTUAL (AM/PM): 2005 ACTUAL (2030 ESTIMATE) PM:
MADISON/EISENHOWER CFI 10 YEARS LATER
CRASHES:Year Crashes Injury Crashes Year Crashes (Rank) Injury Crashes2019 20 1 2014 21 02018 27 2 2013 22 2
2017 15 3 2012 22 102016 19 4 2011 29 9
2015 16 3 2010 18 6
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