Difference between revisions of "901.1 Lighting to be Provided, Operated, and Maintained at State Expense"

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==901.1.1 Interchanges==
 
==901.1.1 Interchanges==
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Basic lighting along the major road at interchanges is provided if one or more of the following warrants are met:  (1) If construction year AADT on the major road exceeds 25,000 for urban conditions, 20,000 for suburban conditions or 10,000 for rural conditions, and the traffic on the crossroad exceeds 1500.  (2) If the crash ratio of night to day exceeds 1.25 within the interchange area.  (3) If the construction year AADT ramp traffic entering and leaving the major road within the interchange area exceeds 5,000 for urban conditions, 3,000 for suburban conditions or 1,000 for rural conditions and the traffic on the crossroad exceeds 1,500.  Guidance is available for the typical [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf|location of luminaires for basic lighting at diamond interchanges]], [[media:901.2 Typical Basic Lighting Plan for Directional Interchanges.pdf|directional interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf|cloverleaf interchanges]].
 
Basic lighting along the major road at interchanges is provided if one or more of the following warrants are met:  (1) If construction year AADT on the major road exceeds 25,000 for urban conditions, 20,000 for suburban conditions or 10,000 for rural conditions, and the traffic on the crossroad exceeds 1500.  (2) If the crash ratio of night to day exceeds 1.25 within the interchange area.  (3) If the construction year AADT ramp traffic entering and leaving the major road within the interchange area exceeds 5,000 for urban conditions, 3,000 for suburban conditions or 1,000 for rural conditions and the traffic on the crossroad exceeds 1,500.  Guidance is available for the typical [[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf|location of luminaires for basic lighting at diamond interchanges]], [[media:901.2 Typical Basic Lighting Plan for Directional Interchanges.pdf|directional interchanges]] and [[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf|cloverleaf interchanges]].
  
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|'''Figures'''
 
|'''Figures'''
 
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|[[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf|location of luminaires for basic lighting at diamond interchanges]]
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|[[media:901.1 Ttypical Basic Lighting Plan for Diamond Interchanges.pdf|Fig. 901.1 Typical Basic Lighting Plan for Diamond Interchanges]]
 
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|[[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf|directional interchanges]]
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|[[media:901.1.2 (f8-01.2) Typical Basic Lighting Plans for Directional Interchanges.pdf|Fig. 901.2 Typical Basic Lighting Plan for Directional Interchange]]
 
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|[[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf|cloverleaf interchanges]]
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|[[media:901.1.3 (f8-01.3) Typical Basic Lighting Plan for Cloverleaf interchanges.pdf|Fig. 901.3 Typical Basic Lighting Plan for Cloverleaf Interchange]]
 
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|[[media:901.1.2 Typical Basic Lighting Plan.pdf|location of luminaires for basic lighting at channelized intersections]]  
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|[[media:901.1.2 Typical Basic Lighting Plan.pdf|Fig. 901.1.2 Typical Basic Lighting Plan for Signalized Interchange, Channelized Intersections, and Roundabouts Using Divisional Island]]  
 
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==901.1.2 Basic Lighting at Intersections Including Ramp Terminals at Crossroads==
 
==901.1.2 Basic Lighting at Intersections Including Ramp Terminals at Crossroads==
Basic lighting at intersections is provided if any of the following warrants are met:  (1) If the intersection is signalized.  (2) If divisional islands are used (refer to Islands in 233, At-Grade Intersections).  (3) If construction year AADT on the crossroad exceeds 15,000 for urban conditions.  (4) If basic lighting along the freeway is provided.  (5) If the crash ratio of night to day exceeds 1.25.  (6) If poor sight distance exists.  Guidance for the typical [[media:901.1.2 Typical Basic Lighting Plan.pdf|location of luminaires for basic lighting at channelized intersections]] is available.
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Basic lighting at intersections is provided if any of the following warrants are met:  (1) If the intersection is signalized.  (2) If divisional islands are used (refer to [[233.2 At-Grade Intersections with Stop and Yield Control#233.2.12 Islands|EPG 233.2.12 Islands]] and [[233.4 At-Grade Intersections with Signal Control#233.4.8 Islands|EPG 233.4.8 Islands]]).  (3) If construction year AADT on the crossroad exceeds 15,000 for urban conditions.  (4) If basic lighting along the freeway is provided.  (5) If the crash ratio of night to day exceeds 1.25.  (6) If poor sight distance exists.  Guidance for the typical [[media:901.1.2 Typical Basic Lighting Plan.pdf|location of luminaires for basic lighting at channelized intersections]] is available.
  
  
  
 
[[Category:901 Lighting|901.01]]
 
[[Category:901 Lighting|901.01]]

Latest revision as of 12:02, 24 July 2020

901.1.jpg

901.1.1 Interchanges

Basic lighting along the major road at interchanges is provided if one or more of the following warrants are met: (1) If construction year AADT on the major road exceeds 25,000 for urban conditions, 20,000 for suburban conditions or 10,000 for rural conditions, and the traffic on the crossroad exceeds 1500. (2) If the crash ratio of night to day exceeds 1.25 within the interchange area. (3) If the construction year AADT ramp traffic entering and leaving the major road within the interchange area exceeds 5,000 for urban conditions, 3,000 for suburban conditions or 1,000 for rural conditions and the traffic on the crossroad exceeds 1,500. Guidance is available for the typical location of luminaires for basic lighting at diamond interchanges, directional interchanges and cloverleaf interchanges.

Figures
Fig. 901.1 Typical Basic Lighting Plan for Diamond Interchanges
Fig. 901.2 Typical Basic Lighting Plan for Directional Interchange
Fig. 901.3 Typical Basic Lighting Plan for Cloverleaf Interchange
Fig. 901.1.2 Typical Basic Lighting Plan for Signalized Interchange, Channelized Intersections, and Roundabouts Using Divisional Island


901.1.2 Basic Lighting at Intersections Including Ramp Terminals at Crossroads

Basic lighting at intersections is provided if any of the following warrants are met: (1) If the intersection is signalized. (2) If divisional islands are used (refer to EPG 233.2.12 Islands and EPG 233.4.8 Islands). (3) If construction year AADT on the crossroad exceeds 15,000 for urban conditions. (4) If basic lighting along the freeway is provided. (5) If the crash ratio of night to day exceeds 1.25. (6) If poor sight distance exists. Guidance for the typical location of luminaires for basic lighting at channelized intersections is available.