Project Development – High Priority Segments -- ATP 2 10/29/2012 Road Surface? Paved Gravel...
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Project Development – High Priority Segments -- ATP 2 10/29/201 Road Surface? Paved Gravel Segment received Stars for Lane Departure Crash Density & Critical Radius Curve Density YES NO 1 6” Latex Edge Line ADT < 200 No Project Chevrons in Critical Radius Curves 200 < ADT < 1,700 ADT > 1,700 6” Wet Reflective in groove YES Centerline Rumble Strip & 6” Wet Reflective in groove NO NO Shoulder Rumble Strip Centerline & Shoulder Rumble Strip NO NO Lane Width > 12 feet YES YES YES Noise Sensitive Receiver? Paved Shoulder? Edge Line Rumble Strip Centerline & Edge Line Rumble Strip NO YES YES 2 ft. Shoulder Paving, Safety Edge, and Shoulder Rumble Strip* Note: Except for gravel roads, corridor projects may also include Chevrons and paving 2’ shoulders in curves. * Where shoulder regrading not required and up to an annual limit of 6 miles of paving. Beyond 6 miles per year of shoulder paving, wet reflective in a groove to be selected instead. NO Centerline Rumble Strip & 2 ft. Shoulder Paving, Safety Edge, and Shoulder Rumble Strip*
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Transcript of Project Development – High Priority Segments -- ATP 2 10/29/2012 Road Surface? Paved Gravel...
Project Development – High Priority Segments -- ATP 2
10/29/2012
Road Surface?
Paved Gravel
Segment received Stars forLane Departure Crash Density &
Critical Radius Curve Density
YES NO
1
6” Latex Edge Line
ADT < 200
No ProjectChevrons in
Critical Radius Curves
200 < ADT < 1,700 ADT > 1,700
6” WetReflective in groove
YES
Centerline Rumble Strip & 6” Wet
Reflective in groove
NO NO
ShoulderRumble Strip
Centerline& Shoulder
Rumble Strip
NO NO
Lane Width > 12 feet
YES
YES YES
Noise Sensitive Receiver?
Paved Shoulder?
Edge LineRumble Strip
Centerline & Edge LineRumble Strip
NOYES YES
2 ft. Shoulder Paving, Safety Edge,
and Shoulder Rumble Strip*
Note: Except for gravel roads, corridor projects may also include Chevrons and paving 2’ shoulders in curves.
* Where shoulder regrading not required and up to an annual limit of 6 miles of paving. Beyond 6 miles per year of shoulder paving, wet reflective in a groove to be selected instead.
NO
Centerline Rumble Strip & 2 ft. Shoulder Paving, Safety Edge,
and Shoulder Rumble Strip*
Project Development – High Priority Segments -- Rural METRO
10/29/2012
Road Surface?
Paved Gravel
2
6” Latex Edge Line
ADT < 600No Project
ADT > 600
6” WetReflective in groove
YES NO
ShoulderRumble Strip
NO
Lane Width > 12 feet
YES
Noise Sensitive Receiver?
Paved Shoulder?
Edge LineRumble Strip
NOYES
2 ft. Shoulder Paving, Safety Edge,
and Shoulder Rumble Strip*
Note: Corridor projects may also include Chevrons and paving 2’ shoulders in curves.
* Where shoulder regrading not required and up to an annual limit of 6 miles of paving. Beyond 6 miles per year of shoulder paving, wet reflective in a groove to be selected instead.
** At a limit of 6 total miles. Beyond 6 miles of 12-ft buffer, a 4-ft buffer to be selected instead.
*** At a limit of 10 total miles. Beyond 10 miles of 4-ft buffer , centerline rumble strip to be selected instead.
3,000 < ADT < 8,000
At Least One Severe Head-onor Sideswipe Opposing Crash
CenterlineRumble Strip
NO
Access Density > 16 per mile
YES
4-ft buffer with Centerline
Rumble Strip***
12-ft buffer with Left Turn Lanes**
Road Departure Project – Star Ranking
Centerline Project – ADT
NO YES
Project Development – High Priority Segments – Urban METRO
10/29/2012
3
Road Cross Section
4-lane to 3-lane conversionor
Reallocate road & shoulderwidth to convert 2-lane to 3-lane
Consideraccess management
during futurereconstruction
Two-Lane or Four-Lane Undivided Other
Directional Median+ Street Lights+ Upgraded Signs &
Markings
Total ADT> 4,500AND
Minor ADT> 500 AND
Right Angle Crash?
Divided Roadway?
Roundabout
Upgraded Signs & Markings
Dynamic Mainline Warning+ Street Lights+ Upgraded Signs &
Markings
Street Lights Not InstalledAND
Minor ADT >200?
Street Lights+ Upgraded
Signs & Markings
CSAH ADT > TH ADTOR
Major ADT ≈ Minor ADT?
Street Lights+ All-Way Stop+ Upgraded Signs
& Markings
Multiple Severe Right AngleAND
Major>10,000 & Minor>4,000?
NO
YES
PROJECT:
YES NO
PROJECT: PROJECT:PROJECT:
PROJECT: PROJECT:
YESNO
YES NO
YESNO
Project Development – High Priority Rural Intersections
Road Surface?
All Legs Paved
Minor Legs Gravel
Note: On gravel approaches, install stop bar on paved apron
All Legs Gravel
Review for Sign Upgrade or Removal of Signs+Clear Sight Triangles
PROJECT:
10/29/2012
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Project Development – High Priority Curves
Three ways for a Curve to receive a project:
High Priority Curvesand those in close proximity
Curves w/ Existing Chevrons
All Curves on Roadways*
High Priority Segments & Critical Curve Radius
PROJECT:
Install/upgrade Chevrons+2’ Shoulder Paving+Rumble Strip
Note: Gravel roads were considered if the segment experienced a high frequency of severe curve-related crashes.
10/29/2012
5
Project Development – High Priority Ped/Bike Locations -- Urban Metro
Intersection Type
On Street Parking?
Raised Island
Pedestrian CountdownTimers & Advanced Walk
Curb Extensions
Countdown Timers?
Advanced Walk
Corridor Focused(ADT, Lanes, Configuration, Speed)
Space available in medianOR
ability to reallocate space?
Consider during future reconstruction
YES NO
Signalized Unsignalized
YES NO
YES NO
11/1/2012
Spacing < Guidelines?
Project Development – High Priority Right Angle Locations -- Urban Metro
11/1/2012
Corridor Focused(ADT, Configuration, Speed)
Intersection Type
Confirmation LightsRoundabout
Multiple Severe Right AngleAND
Major>10,000 & Minor>4,000?
Divided?
Commercial?
Right In/Right Out Directional Median
YES
Signalized Unsignalized
NO
NO YES
NO YES
NO YES
Consider during future reconstruction
