Anchor: #i1032108

Section 9: HSIP Work Codes Table

Anchor: #i1032113

Introduction

This section lists and describes HSIP work codes used in the SII calculation described in Section 6. The work codes are grouped into five categories, as shown in the following table.

Anchor: #i1019109Work Code Groups

Code

Item

100

Signing and Signals

200

Roadside Obstacles and Barriers

300

Resurfacing and Roadway Lighting

400

Pavement Markings

500

Roadway Work



Work codes are listed by number within each group.

Anchor: #i1032127

Signing and Signals

101

Install Warning/Guide Signs

 

Definition:

Provide advance signing for unusual or unexpected roadway features where no signing existed previously.

 

Reduction Factor (%):

20

 

Service Life (Years):

6

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Vehicle Movements/Manner of Collision = 20–22 or 30) OR (Roadway Related = 2, 3 or 4)



102

Install STOP Signs

 

Definition:

Provide STOP signs where none existed previously.

 

Reduction Factor (%):

20

 

Service Life (Years):

6

 

Maintenance Cost:

N/A

 

Preventable Crash:

Intersection Related = 1 or 2



105

Install Intersection Flashing Beacon

 

Definition:

Provide a flashing beacon at an intersection where a beacon did not exist previously.

 

Reduction Factor (%):

25

 

Service Life (Years):

10

 

Maintenance Cost:

$2,100 (overhead)

$1,300 (roadside mounted)

 

Preventable Crash:

Intersection Related = 1 or 2



106

Modernize Intersection Flashing Beacon

 

Definition:

Improve an existing overhead flashing beacon, located at an intersection, to current design standards. Refer to W.C. 104 for non-intersection flashing beacon.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Intersection Related = 1 or 2



107

Install Traffic Signal

 

Definition:

Provide a traffic signal where none existed previously.

 

Reduction Factor (%):

28

 

Service Life (Years):

10

 

Maintenance Cost:

$3,400 (Isolated)

$3,900 (Interconnected)

$5,400 (Diamond Interchange)

 

Preventable Crash:

[(Intersection Related = 1 or 2) AND (Vehicle Movements/Manner of Collision = 10–39)] OR (First Harmful Event = 1 or 5)



108

Improve Traffic Signals

 

Definition:

Modernize existing intersection signals to current design standards. Refer to W.C. 106 for modernization of intersection flashing beacons.

 

Reduction Factor (%):

22

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

[(Intersection Related =1 or 2) AND (Vehicle Movements/Manner of Collision = 10–39)] OR (First Harmful Event = 1 or 5)



110

Install Pedestrian Signal

 

Definition:

Provide a pedestrian signal at an existing signalized location where no pedestrian phase exists, but pedestrian crosswalks are existing. Refer to W.C. 403 for installation of pedestrian crosswalks.

 

Reduction Factor (%):

15

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

First Harmful Event = 1



111

Interconnect Signals

 

Definition:

Provide a communication link between two or more adjacent signals in a corridor. Specify all signalized intersections to be included in the interconnection.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

All



112

Overheight Warning System

 

Definition:

Install electronic devices to detect overheight loads.

 

Reduction Factor (%):

65

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Object Struck = 43



113

Install Delineators

 

Definition:

Install post mounted delineators to provide guidance.

 

Reduction Factor (%):

30

 

Service Life (Years):

2

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2 , 3 or 4) AND (Light Condition = 3, 4 or 6)



114

Install School Zones

 

Definition:

Place school zones to include flashers, signing and/or pavement markings where none existed previously. Refer to W.C. 403 for pedestrian crosswalk markings.

 

Reduction Factor (%):

20

 

Service Life (Years):

5

 

Maintenance Cost:

N/A

 

Preventable Crash:

All



118

Replace Flashing Beacon with a Traffic Signal

 

Definition:

Replace an existing flashing beacon at an intersection with a traffic signal.

 

Reduction Factor (%):

25

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300

 

Preventable Crash:

[(Intersection Related = 1 or 2) AND (Vehicle Movements/Manner of Collision = 10–39)] OR (First Harmful Event = 1 or 5)



119

Install Overhead Guide Signs

 

Definition:

Install overhead advance signing for unusual or unexpected roadway features where no signing existed previously.

 

Reduction Factor (%):

20

 

Service Life (Years):

6

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–29



121

Convert 2-way STOP Signs to 4-way STOP Signs

 

Definition:

Provide 4-way STOP signs where 2-way STOP signs existed previously.

 

Reduction Factor (%):

15

 

Service Life (Years):

6

 

Maintenance Cost:

N/A

 

Preventable Crash:

Intersection/Intersection Related = 1 or 2



122

Install Advance Warning Signals (Intersection — Existing Signal, Flashing Beacon or STOP Signs)

 

Definition:

Provide flasher units in advance of an intersection where none previously existed.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

Intersection Related = 1 or 2



123

Install Advance Warning Signals (Curve)

 

Definition:

Provide flasher units in advance of a curve where none previously existed.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20–24 or 30)



124

Install Advance Warning Signals and Signs (Intersection — Existing Signal, Flashing Beacon or STOP Signs)

 

Definition:

Provide flasher units and signs in advance of an intersection where none previously existed.

 

Reduction Factor (%):

15

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

Intersection Related = 1 or 2



125

Install Advance Warning Signals and Signs (Curve)

 

Definition:

Provide flasher units and signs in advance of a curve where none previously existed.

 

Reduction Factor (%):

15

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20–24 or 30)



126

Install Advance Warning Signals and/or Signs (Intersection — Uncontrolled , No Existing Advance Warning)

 

Definition:

Provide flasher units and/or signs in advance of an uncontrolled intersection where none previously existed.

 

Reduction Factor (%):

20

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

Intersection Related = 1 or 2



127

Install Advance Warning Signals (Intersection — Existing Warning Signs)

 

Definition:

Provide flasher units in advance of an intersection where none previously existed. Advance warning signs already exist.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

Intersection Related = 1 or 2



128

Install Advance Warning Signs (Intersection — Existing Warning Signals)

 

Definition:

Provide signs in advance of an intersection where none previously existed. Advance warning signals already exist.

 

Reduction Factor (%):

5

 

Service Life (Years):

6

 

Maintenance Cost:

N/A

 

Preventable Crash:

Intersection Related = 1 or 2



129

Install Advance Warning Signals (Curve — Existing Warning Signs)

 

Definition:

Provide flasher units in advance of a curve where none previously existed. Advance warning signs already exist.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20–24 or 30)



130

Install Advance Warning Signs (Curve — Existing Warning Signals)

 

Definition:

Provide signs in advance of a curve where none previously existed. Advance warning signals already exist.

 

Reduction Factor (%):

5

 

Service Life (Years):

6

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20–24 or 30)



131

Improve Pedestrian Signals

 

Definition:

Bring existing pedestrian signal units into conformance with current standards.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

First Harmful Event = 1



132

Install Advance Warning Signals and Signs

 

Definition:

Provide flasher units and signs in advance of hazard where none previously existed.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

$1,300 per Approach

 

Preventable Crash:

To be determined



133

Improve School Zone

 

Definition:

Improve an existing school zone by upgrading signing, pavement markings or signals.

 

Reduction Factor (%):

5

 

Service Life (Years):

5

 

Maintenance Cost:

N/A

 

Preventable Crash:

All



Anchor: #i1032131

Roadside Obstacles and Barriers

201

Install Median Barrier

 

Definition:

Construct a metal, concrete, or cable safety system median barrier where none existed previously.

 

Reduction Factor (%):

65

 

Service Life (Years):

15

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Vehicle Movements/Manner of Collision = 30) OR [(Roadway Related = 4) AND (Object Struck = 1, 3, 20–23, 29–30, 32–33, 36, 39-40, 42, 56-57, 60, 62, or 63)]



202

Convert Median Barrier

 

Definition:

Remove an existing metal median barrier system and install a concrete or cable safety system median barrier.

 

Reduction Factor (%):

40

 

Service Life (Years):

15

 

Maintenance Cost:

N/A

 

Preventable Crash:

[(Roadway Related = 4) AND (Object Struck = 23, 39, 56, 62, or 63)] OR (Vehicle Movements/Manner of Collision = 30)



203

Install Raised Median

 

Definition:

Install a roadway divider using barrier curb.

 

Reduction Factor (%):

40

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Part of Roadway No. 1 Involved = 1) AND (Vehicle Movements/Manner of Collision = 10, 14, 20–22, 24, 26, 28–30, 34 OR 38)



204

Flatten Side Slope

 

Definition:

Provide an embankment side slope of 6:1 or flatter.

 

Reduction Factor (%):

46

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

Roadway Related = 3



205

Modernize Bridge Rail and Approach Guardrail

 

Definition:

Improve existing substandard bridge rail and approach guardrail to current design standards.

 

Reduction Factor (%):

15

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Object Struck = 23, 39–41 or 56) OR (Bridge Detail = 2 or 3)



206

Improve Guardrail to Design Standards

 

Definition:

Bring existing substandard guardrail into conformance with current design standards.

 

Reduction Factor (%):

7

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Object Struck = 20–26, 29–36, 40–42, 56–58, 60, 62, or 63)



207

Install Protection

 

Definition:

Install guardrail or concrete traffic barrier where none existed previously. Refer to W.C. 209 if using guardrail to safety treat a fixed object or drainage structures.

 

Reduction Factor (%):

30

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Object Struck = 20–26, 29–36, 40–42, 56–58, 60, 62, or 63)



209

Safety Treat Fixed Objects

 

Definition:

Remove, relocate or safety treat all fixed objects including the installation of guardrail for safety treatment of a fixed object or drainage structures within the project limits, to include both point and continuous objects.

 

Reduction Factor (%):

55

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Object Struck = 20–26, 29–36, 40–42, 56–58, 60, 62, or 63)



217

Install Impact Attenuation System

 

Definition:

Provide any of a variety of impact attenuators where none existed previously.

 

Reduction Factor (%):

60

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Object Struck = 20, 30, 40 or 42)



218

Widen Bridge

 

Definition:

Provide additional width across an existing structure, either by rehabilitation or replacement. Specify existing bridge width, existing approach roadway width and roadway type (2 lane, 4 lane undivided, etc.)

 

Reduction Factor (%):

55

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Bridge Detail 8) OR (Vehicle Movements/Manner of Collision = 20, 21, or 30) OR (Roadway Related = 2, 3 or 4)



219

Install Curb – Control of Access

 

Definition:

Install curb for an urban low-speed design highway where no previous curb existed and the crash history indicates a control of access problem.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

[(Intersection Related = 3 or 4) AND (Vehicle Movements/Manner of Collision = 10–19, 20–29, 33–39, 40–44,)] OR (Roadway Related = 2 or 3) OR (Object Struck = 20, 22–23, 26, 29–36) OR (First Harmful Event = 1 or 4)



220

Relocate Luminaire Supports From Median

 

Definition:

Relocate luminaire supports from median (usually narrow) and place between outside curb and R.O.W.

 

Reduction Factor (%):

To be defined.

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2 or 4) OR (Object Struck = 20–26, 29–36, 40–42, 56–58, 60, 62, or 63)



222

Improve Impact Attenuation System

 

Definition:

Improve existing impact attenuators.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Object Struck = 20, 30, 40 or 42)



Anchor: #i1032135

Resurfacing and Roadway Lighting

303

Resurfacing

 

Definition:

Provide a new roadway surface to increase pavement skid numbers on all the lanes (current skid numbers must be less than 40).

 

Reduction Factor (%):

42

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Surface Condition = 2 or 4



304

Safety Lighting

 

Definition:

Provide roadway lighting, either partial or continuous, where either none existed previously or major improvements are being made. Refer to W.C. 305 for intersection lighting.

 

Reduction Factor (%):

40

 

Service Life (Years):

15

 

Maintenance Cost:

$100 per Luminaire

 

Preventable Crash:

Light Condition = 3, 4 or 6



305

Safety Lighting at Intersection

 

Definition:

Install lighting at an intersection where either none existed previously or major improvements are proposed. Refer to W.C. 304 for general lighting.

 

Reduction Factor (%):

75

 

Service Life (Years):

15

 

Maintenance Cost:

$100 per Luminaire

 

Preventable Crash:

Light Condition = 3, 4 or 6 AND Intersection Related = 1 or 2



Anchor: #i1032139

Pavement Markings

401

Install Pavement Markings

 

Definition:

Place complete pavement markings, excluding crosswalks, in accordance with the TMUTCD where either no markings or nonstandard markings exist. Refer to W.C. 402 for edge marking, W.C. 403 for pedestrian crosswalks, W.C. 404 for centerline striping.

 

Reduction Factor (%):

20

 

Service Life (Years):

2

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 21 or 30) OR (First Harmful Event = 3)



402

Install Edge Marking

 

Definition:

Place edge lines where none existed previously.

 

Reduction Factor (%):

25

 

Service Life (Years):

2

 

Maintenance Cost:

N/A

 

Preventable Crash:

Roadway Related = 2, 3 or 4



403

Install Pedestrian Crosswalk

 

Definition:

Place pedestrian crosswalk markings where none existed previously. Refer to W.C. 114 for school zones, and W.C. 110 for pedestrian signal.

 

Reduction Factor (%):

10

 

Service Life (Years):

2

 

Maintenance Cost:

N/A

 

Preventable Crash:

First Harmful Event = 1



404

Install Centerline Striping

 

Definition:

Provide centerline striping where either no markings or nonstandard markings existed previously. Refer to W.C. 401 for complete pavement markings.

 

Reduction Factor (%):

65

 

Service Life (Years):

2

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 30



407

Install Sidewalks

 

Definition:

Install sidewalks where none existed previously.

 

Reduction Factor (%):

20

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

First Harmful Event = 1 or 5



Anchor: #i1032143

Roadway Work

501

Modernize Facility to Design Standards

 

Definition:

Provide modernization to all features within the Right-of-Way to achieve current desirable standards. This includes work such as widening the travelway, widening the shoulders, constructing shoulders, flattening the side slopes, and treating roadside obstacles.

 

Reduction Factor (%):

15

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

All



502

Widen Lane(s)

 

Definition:

Provide additional width to the lane(s). Refer to W.C. 517 if adding a through lane.

 

Reduction Factor (%):

30

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 13, 21, 23, 30 or 33)



503

Widen Paved Shoulder (to 5 ft. or less)

 

Definition:

Extend the existing paved shoulder to achieve desirable shoulder width. Refer to W.C. 504 or 537 for constructing a paved shoulder.

 

Reduction Factor (%):

25

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (First Harmful Event = 4)



504

Construct Paved Shoulders (1 – 4 ft.)

 

Definition:

Provide paved shoulders of 1- to 4-foot width where no shoulders existed previously. Refer to W.C. 503 or 536 for widening paved shoulders.

 

Reduction Factor (%):

25

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20, 23–24 or 30) OR (First Harmful Event = 4)



505

Improve Vertical Alignment

 

Definition:

Reconstruct the roadway to improve sight distance.

 

Reduction Factor (%):

50

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20–24, 30, 32 or 34)



506

Improve Horizontal Alignment

 

Definition:

Flatten existing curves. Refer to W.C. 507 for providing superelevation, and W.C. 508 for intersection realignment.

 

Reduction Factor (%):

50

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20–24 or 30)



507

Increase Superelevation

 

Definition:

Provide increased superelevation on an existing curve.

 

Reduction Factor (%):

65

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 30)



508

Realign Intersection

 

Definition:

Improve an existing intersection by partial or complete relocation of the roadway(s). Refer to W.C. 509 for channelization, and W.C. 506 for improving horizontal alignments.

 

Reduction Factor (%):

To be defined.

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Will be determined from supplied diagram



509

Channelization

 

Definition:

Install islands and/or pavement markings to control or prohibit vehicular movements. A sketch of the proposed channelization should be provided. Refer to W.C. 508 for intersection realignment.

 

Reduction Factor (%):

To be defined.

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Will be determined from supplied diagram



510

Construct Turn Arounds

 

Definition:

Provide turnarounds at an intersection where none existed previously.

 

Reduction Factor (%):

40

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Intersection Related = 1 or 2) AND (Vehicle Movements/Manner of Collision = 12, 14, 18, 20, 22, 24, 26, 28, 29, or 34)



511

Add Acceleration/Deceleration Lanes

 

Definition

Construct acceleration and/or deceleration lanes where none existed previously.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Vehicle Movements/Manner of Collision = 20 or 21) OR [(Intersection Related = 1 or 2) AND (Vehicle Movements/Manner of Collision = 13 or 23)]



514

Grade Separation

 

Definition:

Construct vertical separation of intersecting roadways.

 

Reduction Factor (%):

80

 

Service Life (Years):

30

 

Maintenance Cost:

N/A

 

Preventable Crash:

Intersection Related = 1 or 2



515

Construct Interchange

 

Definition:

Construct vertical separation of intersecting roadways to include interconnecting ramps.

 

Reduction Factor (%):

65

 

Service Life (Years):

30

 

Maintenance Cost:

N/A

 

Preventable Crash:

Intersection Related = 1 or 2



516

Close Crossover

 

Definition:

Permanently close an existing crossover.

 

Reduction Factor (%):

95

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Part of Roadway Involved = 1) AND (Vehicle Movements/Manner of Collision = 10, 14, 20–22, 24, 26, 28–30, 34 or 38)



517

Add Through Lane

 

Definition:

Provide an additional travel lane.

 

Reduction Factor (%):

28

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–24, 26–27, 29–30



518

Install Continuous Turn Lane

 

Definition:

Provide a continuous two-way left turn lane where none existed previously.

 

Reduction Factor (%):

45

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–22, 24, 26, 28–30, 34 or 38



519

Add Left Turn Lane

 

Definition:

Provide an exclusive left turn lane where none existed previously. The affected intersection approaches must be specified.

 

Reduction Factor (%):

25

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–22, 24, 26, 28–30, 34 or 38 AND Intersection Related 4



520

Lengthen Left Turn Lane

 

Definition:

Provide additional length to an existing exclusive left turn lane. Affected intersection approaches must be specified.

 

Reduction Factor (%):

40

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–22 AND Intersection Related 4



521

Add Right Turn Lane

 

Definition:

Provide an exclusive right turn lane where none existed previously. Affected intersection approaches must be specified.

 

Reduction Factor (%):

25

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–23, 25–27, 33 or 36 AND Intersection Related 4



522

Lengthen Right Turn Lane

 

Definition:

Provide additional length to an existing exclusive right turn lane. Affected intersection approaches must be specified.

 

Reduction Factor (%):

40

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–22 AND Intersection Related 4



523

Construct Pedestrian Over/Under Pass

 

Definition:

Construct a pedestrian crossover where none existed previously.

 

Reduction Factor (%):

95

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

First Harmful Event = 1



524

Increase Turning Radius

 

Definition:

Provide an increased turning radius at an existing intersection.

 

Reduction Factor (%):

10

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

[(Vehicle Type = 2–3, 5–8, or 24) AND (First Harmful Event = 7)] OR (Vehicle Movements/Manner of Collision = 13, 20–21, 30 or 33)



525

Convert to One-Way Frontage Roads

 

Definition:

Convert two-way frontage roads to one-way operation.

 

Reduction Factor (%):

25

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Part of Roadway Involved = 2



526

Increase Vertical Clearance (Lower Grade)

 

Definition:

Increase vertical clearance of a roadway underneath an overhead obstacle by lowering the roadway grade.

 

Reduction Factor (%):

50

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Object Struck = 43



527

Increase Vertical Clearance (Remove Structure)

 

Definition:

Remove an overhead structure in order to increase vertical clearance.

 

Reduction Factor (%):

95

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Object Struck = 43



528

Construct Median Crossover

 

Definition:

Provide crossovers in the median where none previously existed.

 

Reduction Factor (%):

20

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Part of Roadway Involved = 1) AND (Vehicle Movements/Manner of Collision = 10, 14, 20–22, 24, 26, 28, 29, 34 or 38)



529

Remove Raised Median/Concrete Island

 

Definition:

Permanently remove raised median/concrete island.

 

Reduction Factor (%):

35

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Object Struck = 21 or 36



532

Texturize Shoulders (rolled-in or milled-in)

 

Definition:

Install milled-in or rolled-in rumble strips along the shoulder.

 

Reduction Factor (%):

25

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 30)



533

Texturize Shoulders (Profile Pavement Markers)

 

Definition:

Install high-profile pavement markers along the shoulder.

 

Reduction Factor (%):

15

 

Service Life (Years):

5

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 30) OR (Surface Condition = 2 or 4)



535

Widen Median Opening for Storage

 

Definition:

Widen an existing opening in the median to accommodate vehicles for storage.

 

Reduction Factor (%):

20

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 10, 14, 20 or 21



536

Widen Paved Shoulders (to > 5 ft.)

 

Definition:

Extend the existing paved shoulder to greater than 5 ft. Refer to W.C. 504 or 537 for constructing a paved shoulder.

 

Reduction Factor (%):

40

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (First Harmful Event = 4)



537

Construct Paved Shoulders ( 5 ft.)

 

Definition:

Provide paved shoulders 5 feet or greater where no shoulders existed previously. Refer to W.C. 503 or 536 for widening paved shoulders.

 

Reduction Factor (%):

40

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 20, 23–24 or 30) OR (First Harmful Event = 4)



538

Convert 2-Lane Facility to 4-Lane Divided

 

Definition:

Convert an existing 2-lane facility to a 4-lane divided facility.

 

Reduction Factor (%):

45

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2, 3 or 4) OR (Vehicle Movements/Manner of Collision = 10, 13, 14, 20, 21, 22, 24 or 30)



539

Install Grass Median on Undivided Facility

 

Definition:

Install a grass median on an undivided facility.

 

Reduction Factor (%):

40

 

Service Life (Years):

20

 

Maintenance Cost:

N/A

 

Preventable Crash:

Vehicle Movements/Manner of Collision = 20–24 or 30



540

Install Passing Lanes on 2-Lane Road

 

Definition:

Install passing lanes on a 2-lane road.

 

Reduction Factor (%):

25

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Roadway Related = 2 or 3) OR (Vehicle Movements/Manner of Collision = 20–24 or 30)



542

Centerline Texturing

 

Definition:

Install milled-in rumble strips along the centerline.

 

Reduction Factor (%):

35

 

Service Life (Years):

10

 

Maintenance Cost:

N/A

 

Preventable Crash:

(Vehicle Movements/Manner of Collision = 21 or 30) OR (Roadway Related = 2 or 3)



543

Install Transverse Rumble Strips at Rural Intersection

 

Definition:

Install transverse rumble strips at the approach to a RURAL intersection with existing traffic control devices.

 

Reduction Factor (%):

35

 

Service Life (Years):

2

 

Maintenance Cost:

N/A

 

Preventable Crash:

Intersection Related = 1 or 2



Previous page  Next page   Title page