YELLOW TRAP LOCATIONS

In the Bloomington Indiana area


5-section signal head The dangerous condition known as yellow trap (or lag trap) is manifesting itself at many intersections in the Bloomington Indiana area. This has caused many traffic accidents.

A simple explanation of yellow trap can be found here. It usually happens with the signal face shown here.

A simple explanation of second yellow trap can be found here. It happens when right turn signals are present.

A simple explanation of third yellow trap can be found here. It happens when a phase is reserviced.

The list was updated on 04/13/2018.


Bloomington Area Signals with Yellow Trap

The Bloomington area has many signals where yellow trap occurs.

THESE INTERSECTIONS ARE OUT OF COMPLIANCE WITH THE NEW USDOT 2009 MUTCD*, Section 4D.05, and were (as of 2008) out of compliance with the 2003 MUTCD*.


The out-of-compliance intersections are listed below, with the following information:

  • Signal locations, listed from highest to lowest probability of trouble
  • Signal face locations violating 2009 MUTCD* are shown in pink
  • Left turn phasing at the intersection.
  • The probability of encountering the hazard at the location
  • The jurisdiction in control of the signal
  • Which approaches require extra caution

* United States Department of Transportation, Manual of Uniform Traffic Control Devices. Note that existing signals are allowed to remain in violation until redesigned. But the signs warning of yellow trap must be posted as of 2008.

To Prevent the Yellow Trap Sequence

The MUTCD requires one of these to be in place by 2008:

  • The yellow trap condition must be removed or prevented by modifying the signal sequence.
  • Flashing Yellow Arrows must be used.
    • This is the new 2009 MUTCD standard display that allows permissive turns on a flashing yellow arrow.
    • This is not allowed where a lane is shared by the left turn and other traffic.
  • Exclusively-protected left turn signals must be used in both directions.
  • Dallas Phasing (This was a solution to yellow trap, but the 2009 MUTCD* no longer allows it. Existing signals may remain.)
  • If yellow trap is not removed, the sign at right must be posted near the left turn signal.
yellow trap sign

If yellow trap occurs every cycle, the sign must read, "ONCOMING TRAFFIC HAS EXTENDED GREEN" instead.

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Table Experience Key:
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Analysis The signal can yellow trap. No dangerous sightings made yet.
Sighting Page author sighted yellow trap events that endangered vehicles.
Accident Confirmed accident(s) caused by yellow trap.
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Table Location Color Key:
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Light green The signal face location conforms to 2009 MUTCD.
Lilac Old - Circular greens located left of the left-turn lane line.
Pink Since 2009 - Circular greens located left of left-turn lane line.
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Signal Phasing Codes: Direction of
travel toward
intersection:
ns.ew.d
n = northbound
d = extra leg
p = excl ped
Lead-Lag:
LG/GL = 0 split
XG/GX = 1 split
XK/KX = 2 split
LG/GL = split phase
1 2 3 4 5 = sep ord
d = 3 after ns
d = 5 after ew
? = unknown
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Left Turn
Phasing Case
Lead Lag
SimulSplitSimulSplit
ExclusiveLXG K
Excl/Permlxg k
FYA Excl/Permbfa v
Permissive-
Only-Perm FYAy
T stemT
One-Way Awayo
No approachO
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Note that some other intersections could cause yellow trap due to emergency vehicle pre-emption, whether or not they have left turn signals. They are not listed here, because it would be very hard to find out which ones.

The 2009 MUTCD requires that no circular green indications may be displayed on a two-way street to the left of an extension of the lane line separating the left turn lane from the adjacent thru lane. But existing signals may remain in place.

Left Turn Signals with Yellow Trap

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LocationTypeProb JurisdictionExperienceDirections affected
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Third St (IN-46) at Smith Rd--.xxHIGH StateAccidenteastbound; westbound
Walnut St at South Drxx.--HIGH BloomingtonSighting*northbound; southbound
Second St at Oakdale Dr / Basswood Drxx.xxHIGH StateAnalysiseastbound; westbound
IN-48 (Whitehall Pk) at Profile Pw / Park Square Drxx.xxHIGH StateAnalysiseastbound; westbound
Second St (IN-45) at Industrial Bv / Wal-Mart--.xxHIGH StateAccident*eastbound; westbound
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Second St (IN-45) at Liberty Dr--.xxHIGH StateAccident*eastbound; westbound ‡
Third St (IN-46) at Clarizz Bv--.-xHIGH StateSighting*westbound left, eastbound thru, right
Curry Pk at Gifford Rd / United Technologiesx-.LGHIGH CountySighting**southbound left; northbound thru, right
Curry Pk at Jonathan Drxx.--HIGH CountySighting*southbound; northbound
Third St (IN-48) at Liberty Drxx.xxHIGH StateAccidenteastbound; westbound
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Hillside Dr at High Stxx.xxmed BloomingtonSightingall directions
Second St at Patterson Drxx.xxmed BloomingtonSightingeastbound; westbound
Third St (IN-48) at Gates Drxx.xxmed StateSightingeastbound; westbound
Third St (IN-46) at Kingston Drxx.xxmed StateSightingeastbound; westbound
Third St at High St / Bryan StGL.-xmed BloomingtonSighting**eastbound left, westbound thru, right
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Walnut Street at Rhorer Rd / Gordon Pkxx.xxmed CountySighting*all directions
College Mall Rd At Moore's Pkxx.xxmed BloomingtonAnalysisall directions #
IN-48 at Hartstrait Rd and Kirby Rdxx.xxmed StateAnalysiseastbound; westbound
Winslow Rd at Henderson Stxx.xxmed BloomingtonSightingall directions
Second St (IN-45) at Curry Pkxx.xxmed StateAnalysisall directions
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LocationTypeProb JurisdictionExperienceDirections affected
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Third St (IN-46) at Pete Ellis Dr--.xxmed StateAnalysiseastbound; westbound
Walnut St at Fairfax Rd / Church Lnxx.--low CountySighting**northbound; southbound
College Mall Rd at Eastlandxx.xxlow BloomingtonAnalysisnorthbound; southbound
IN-46 at Smith Pk--.xxlow StateSighting*all directions
IN-45 / IN-46 at Kinser Pkxx.xxlow StateSighting*eastbound; westbound
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Third St (IN-48) at Curry Pkxx.xxlow StateSightingeastbound; westbound
IN-46 at Union Valley Rd--.xxlow StateSighting**eastbound; westbound
Third St at Franklin Rd / Wynndale DrGL.xx.3low StateSightingeastbound; westbound
Third St at Patterson Dr--.xxlow BloomingtonSighting*eastbound; westbound
IN-46 at Hartstraight Rd--.xxlow StateSighting*eastbound; westbound
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College Mall Rd at Second Stxx.xxlow BloomingtonSightingnorthbound; southbound
College Mall Rd at Buick-Cadillac Drxx.--low BloomingtonAnalysisnorthbound; southbound
College Mall Rd at Covenanter Drxx.xxlow BloomingtonSightingall directions
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TOTAL YELLOW TRAP SIGNALS33

* Recent
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* Recent sighting or accident after the federal grace period for yellow trap ended.
** Multiple recent sightings or accidents after the grace period ended.
† Signal and intersection to be removed when I-69 is complete.
‡ Signal was modified from GL.xx phasing to --.xx phasing.
# Modified in 2009 to XX.xx exclusively protected left turns. Changed back to xx.xx in 2010.
♣ Not using flashing yellow arrows even though installed after 01/01/2011.


Signals with Second Yellow Trap

Signals at these locations cause Second Yellow Trap, where a right turn arrow prevents permissive left turns from clearing:

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LocationTypeProb JurisdictionExperienceDirections affected
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none




(Fairfax Rd / Church Ln at Walnut St)xx.--
CountyFixed Right-turn signal was removed.
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TOTAL SECOND YELLOW TRAP SIGNALS0

* Recent
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* Recent sighting or accident after the federal grace period for yellow trap ended.
** Multiple recent sightings or accidents after the grace period ended.
† Signal and intersection to be removed when I-69 is complete.
♣ Not using flashing yellow arrows even though installed after 01/01/2011.


Signals with Little Yellow Trap

The signals at these locations cause Little Yellow Trap, where the yellow lights in opposite directions end at different times:

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LocationTypeProb JurisdictionExperienceDirections affected
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none




Tapp Rd at IN-37 †xx.--low StateSighting** Signal was removed
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TOTAL LITTLE YELLOW TRAP SIGNALS0

* Recent
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* Recent sighting or accident after the federal grace period for yellow trap ended.
** Multiple recent sightings or accidents after the grace period ended.
† Signal and intersection to be removed when I-69 is complete.
♣ Not using flashing yellow arrows even though installed after 01/01/2011.


Signals with Green Trap

The signals at these locations cause Green Trap, where the green lights in opposite directions begin at different times without left turn signals.

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LocationTypeProb JurisdictionExperienceDirections affected
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Third St at Landmark Av--.xxlow BloomingtonSightingnorthbound; southbound
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TOTAL GREEN TRAP SIGNALS1

* Recent
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* Recent sighting or accident after the federal grace period for yellow trap ended.
** Multiple recent sightings or accidents after the grace period ended.
† Signal and intersection to be removed when I-69 is complete.
♣ Not using flashing yellow arrows even though installed after 01/01/2011.


Future Signals with Yellow Trap

The signals at these locations will cause yellow trap problems when they are completed:

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LocationTypeProb JurisdictionExperienceDirections affected
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none




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TOTAL FUTURE YELLOW TRAP SIGNALS0

* Recent
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* Recent sighting or accident after the federal grace period for yellow trap ended.
** Multiple recent sightings or accidents after the grace period ended.
† Signal and intersection to be removed when I-69 is complete.
♣ Not using flashing yellow arrows even though installed after 01/01/2011.


Signals with Yellow Trap Unknown

The signals at these locations might cause yellow trap problems when they are completed:

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LocationTypeProb JurisdictionExperienceDirections affected
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Rogers St at Gordon Pk-x.LGlow CountyUnknownWas -x.-- ♣
Walnut Street Pk at Rhorer Rd??.??low CountyUnknownUnknown
Tapp Rd / Country Club Dr at Rockport Rd??.??low BloomingtonUnknownUnknown
Liberty Dr at Second St (IN-45)--.xxlow StateUnknown(Had green trap, Was GL.xx)
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TOTAL YELLOW-TRAP-UNKNOWN SIGNALS4

* Recent
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* Recent sighting or accident after the federal grace period for yellow trap ended.
** Multiple recent sightings or accidents after the grace period ended.
† Signal and intersection to be removed when I-69 is complete.
♣ Not using flashing yellow arrows even though installed after 01/01/2011.


Left Turn Signals without Yellow Trap

These locations do not yellow trap due to left turn signal operation, even though they have left turn signals. The reason is given in the table:

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LocationTypeJurisdictionReason it is safe
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Walnut St at Winslow Rdxx.xxBloomington Can't skip green ball
Walnut St at North Dr-x.--Bloomington One-way approach
Walnut St at Miller Dr-x.OTBloomington Tee intersection
Walnut St at Hillside Drxx.--Bloomington Can't skip green ball
Walnut St at Grimes Lnxx.xxBloomington Can't skip green ball
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First St at Walnut St-o.x-BloomingtonOne-way street
Second St at College Avo-.-fBloomington One-Way Street, FYA (Was o-.-x)
Second St at Walnut St-o.x-BloomingtonOne-way street
Third St at College Avo-.-xBloomingtonOne-way street
Third St at Walnut St-o.x-BloomingtonOne-way street
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Fourth St at College Avo-.-xBloomingtonOne-way street
Fourth St at Walnut St-o.x-BloomingtonOne-way street
Fifth St at College Avo-.-xBloomingtonOne-way street
Fifth St / Kirkwood Av at Walnut St-o.x-Bloomington One-way street
Sixth St at College Avo-.-xBloomingtonOne-way street
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Seventh St at College Avo-.-xBloomingtonOne-way street
Seventh St at Walnut St-o.x-BloomingtonOne-way street
Tenth St at College Avo-.-xBloomingtonOne-way street
Tenth St at Walnut St-o.x-Bloomington One-way street
17th St at College Avo-.-xBloomingtonOne-way street
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LocationTypeJurisdictionReason it is safe
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17th St at Walnut St-o.x-BloomingtonOne-way street
Third St at Lincoln St-o.x-BloomingtonOne-way street
Third St at Dunn Sto-.-LBloomingtonOne-way street
Second St at Rogers Stxx.xxBloomington Can't skip green ball
Hillsdale / Woodscrest at Third St--.ffBloomington Flashing Yellow Arrows ♠ (Was LG.--)
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Jordan Av at Third Stx-.o-Bloomington One-way street
Rogers St at Third St-x.--Bloomington Can't skip green ball
Rogers St at Fifth Stxx.xxBloomington Can't skip green ball
Fifth St at Adams StLG.LGBloomington Split-phase (no-split Lead-lag)
Tenth St at Indiana Avxx.x-Bloomington Can't skip green ball, One way
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Tenth St at Woodlawn Av--.ffBloomington Flashing Yellow Arrows (Was --.-x)
Tenth St at Jordan Avxx.xxBloomington Can't skip green ball
17th St at Madison Stxx.xxBloomington Can't skip green ball
Second St at High St-x.-xBloomington Can't skip green ball
Henderson St at Hillside Drxx.xxBloomington Can't skip green ball
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IN-46 at IN-37 southbound rampoO.-xStateOne-way ramp
IN-48 (Third St) at IN-37 northbound ramp-o.K-State One-way ramp
IN-48 (Third St) at IN-37 southbound rampo-.-xState One-way ramp
IN-45 (Second St) at IN-37 northbound rampOT.X-State Tee intersection, No permissive turns
IN-45 at Airport RdOT.x-StateTee intersection
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LocationTypeJurisdictionReason it is safe
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Daniels Wy at IN-48 (Third St)LG.--State No-Split Lead-lag, Right yellow clear
IN-46 at Curry PkGL.XXState No permissive turns, No-Split Lead-lag (split-phase)
Walnut St at IN-37--.xxState IN-37 can't skip green ball
Curry Pk at Profile Pwx-.TOBloomington Tee Intersection
Second St at Landmark Av--.x-Bloomington Anti-yellow-trap design
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Second St at Adams St--.x-Bloomington Anti-yellow-trap design
Patterson Dr at Rogers Stxx.xxBloomington Anti-yellow-trap design
Rogers St at Country Club Drxx.xxBloomington Anti-yellow-trap design
17th St at Fee Lnxx.xxBloomington Anti-yellow-trap design
Third St at Cory Ln--.xxBloomington Anti-yellow-trap design
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Third St at Kimble Av--.xxBloomington Anti-yellow-trap design
Patterson Dr at Fairview Stx-.-xBloomington Anti-yellow-trap design
IN-46 bypass at Tenth St (IN-45)XX.XXState No permissive turns
Third St at College Mall Rd, (IN-46)KX.KXState No permissive turns (Was XX.XX before 02/2018)
IN-45 / IN-46 at Walnut StGX.GXState No permissive turns
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Union St at Tenth Stll.--Bloomington Can't skip green ball
Ind 46 at Arlington Rd--.xxState Anti-yellow-trap design
IN-45 / IN-46 at 17th Stx-.TOState Tee Intersection
Tenth St at Fee LnOT.x-.pBloomington Tee Intersection
Second St at Rolling Ridge Wyff.ffBloomington Flashing Yellow Arrows (New signal)
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LocationTypeJurisdictionReason it is safe
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17th St at Woodlawn Avxx.xxBloomington Can't skip green ball
Vernal Pk at Curry Pkff.ffCounty Flashing Yellow Arrows (Was xx.xx)
Curry Pk at Woodyard RdLG.--County Split-phase (no-split Lead-lag)
IN-37 at Victor PkXX.--State No permissive turns
Second St (IN-45) at IN-37 southbound rampll.llState Can't skip green ball
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IN-446 at IN-46LG.--State Split-phase (no-split Lead-lag)
IN-37 at Tapp Rd †XX.--State Signal was Removed
IN-37 at Vernal Pk †XX.xxState Signal was removed
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TOTAL NO YELLOW TRAP SIGNALS66

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† Signal and intersection to be removed when I-69 is complete.
♠ Intersection offset was removed.
♣ Not using flashing yellow arrows even though installed after 01/01/2011.


These locations have those wonderful new television detectors that can see bicycles:


All locations now have those wonderful energy-saving LED signals. Only a few that have programmed visibility signals still have incandescent lamps. LEDs use only a sixth of the power a regular signal lamp uses.

One problem with LED signals is that the LEDs don't produce enough heat to melt snow off the lenses.


Links

  1. All Yellow Trap Links are here:
    YELLOW TRAP INDEX PAGE
  2. Do you understand yellow trap (lag trap)?
  3. WORST INTERSECTIONS IN BLOOMINGTON INDIANA
  4. Unusual Traffic Problems, Hazards, and Solutions
  5. Home