SIGHT VISIBILITY ZONES AT INTERSECTIONS

1 ' - CAR POSITION, CASE B2 (100' ROW) ' - CAR POSITION, CASE B2 (80' ROW) ' - EYE POSITION, CASE B1 (80' & 100' ROW)(48', 51' & 60' ROW) ' - EYE POSITION, CASE B3 & CASE B1(ALL ROW WIDTHS) ' - EYE POSITION, CASE B2(ALL ROW WIDTHS) ' - EYE POSITION, CASE B2 CASE B1 ' - EYE POSITIONCASE B3 & CASE B1 ' - EYE POSITIONC*BSIGHT VISIBILITY ZONETYPICAL INTERSECTION CORNERMINOR STREET (FOR C AND D ONLY)MAJOR STREET (FOR A AND B ONLY) SIGHT VISIBILITY ' - CAR POSITION, CASE B3 (80' & 100' ROW) ' - CAR POSITION, CASE B3 (48', 51', & 60' ROW) ' - CAR POSITION, CASE B2 (48', 51', & 60' ROW)BACK OF CURBMAJOR STREET (FOR C AND D ONLY)MINOR STREET (FOR A AND B ONLY) SIGHT VISIBILITY *D* ' - CAR POSITION, CASE B3 (ALL ROW WIDTHS) ' - CAR POSITION, CASE B3 (80' & 100' ROW) ' - CAR POSITION, CASE B1 (48', 51', & 60' ROW)M I N O R S T R E E TM A J O R S T R E E TD*AD2D1 INTERSECTION SIGHT VISIBILITY ' - EYE POSITION, CASE B3 (80' & 100' ROW)(51' & 60' ROW)(80' & 100' ROW)

2 SEE NOTE 6 SEE SHEETS 3 THROUGH 8 FOR TYPICAL INTERSECTION SIGHT VISIBILITY ZONE LIMITS**THE SIGHT VISIBILITY ZONE CREATED BY "C" AND "D" IS NOT REQUIREDIF THE INTERSECTION IS CONTROLLED BY AN EXISTING TRAFFIC SIGNALBACK OF CURB (TYP)NOTE: FOR SIGHT ZONE DIMENSIONS, SEE SETBACK TABLE ON SHEET 2 OF THIS STANDARD VISIBILITY ZONESAT INTERSECTIONSUNIFORM STANDARD DRAWINGSCLARK county AREASHEET 1 OF 8 DWG. NO. 01-09-20 SPECIFICATION REFERENCEBCHMNLAGENCY APPROVEDRSETBACK TABLE100'D1=521'(B2)48'51'60'D1=381'(B1) D1=286'(B1)80'D1=411'(B1)MAJORROWA = 272'B = 11'C = 11'D = 101'A = 272'B = 11'C = 11'D = 99'A = 221'B = 10'C = 11'D = 95'A = 201'B = 11'C = 11'D = 101'A = 181'B = 10'C = 10'D = 91'D2=726'(B3)D2=726'(B1)

3 N/AN/AN/AN/AN/AD = 101'C = 12'B = 12'A = 112'D = 97'C = 11'B = 10'A = 104'D = 101'C = 10'B = 10'A = 108'D = 97'C = 11'B = 11'A = 106'D = 92'C = 10'B = 10'A = 86'D = 75'C = 10'B = 10'A = 87'D = 75'C = 11'B = 11'A = 87'D = 85'C = 11'B = 11'A = 85'D = 79'C = 12'B = 12'A = 91'D = 79'C = 12'B = 12'A = 92'D2=440'(B3)D2=469'(B1)D2=286'(B3)D2=3 30'(B1)D = 62'C = 9'B = 10'A = 110'D = 72'C = 11'B = 12'A = 118'D = 71'C = 10'B = 9'A = 136'D = 75'C = 10'B = 10'A = 159'D = 76'C = 11'B = 10'A = 163'D2=469'(B3)D2=499'(B1)48'51'60'MINOR ROW80'100'D1=605'(B3)D1=381'(B2)D1=381'( B2)D1=286'(B2)D1=286'(B1)D2=286'(B3)D2=3 30'(B1)D1=286'(B2)D1=286'(B1)D2=286'(B3) D2=330'(B1)D1=286'(B2)D1=286'(B1)D2=286' (B3)D2=330'(B1)D1=286'(B2)D1=381'(B1)D2= 440'(B3)D2=469'(B1)D1=381'(B2)D1=411'(B1 )D2=469'(B3)D2=499'(B1)D1=381'(B2)D1=521 '(B2)D2=726'(B3)D2=726'(B1)D1=605'(B3)

4 GENERAL CORNER OF EVERY INTERSECTION SHALL HAVE A SIGHTVISIBILITY ZONE REGARDLESS OF RIGHT-OF-WAY WALLS, FENCES, SHRUBS, UTILITY APPURTENANCES ORANY OTHER OBJECT, OTHER THAN TRAFFIC CONTROLDEVICES, FIRE HYDRANTS, TREES, AND STREET LIGHT POLES,MAY BE CONSTRUCTED OR INSTALLED WITHIN THE SIGHTVISIBILITY ZONE UNLESS SAID OBJECT IS MAINTAINED AT LESSTHAN 24 INCHES IN HEIGHT, MEASURED FROM TOP OF CURB,OR WHERE NO CURB EXISTS, A HEIGHT OF 27 INCHESMEASURED FROM THE TOP OF ADJACENT ASPHALT, GRAVELOR PAVEMENT STREET SURFACE. THIS RESTRICTIONEXTENDS ALONG THE SIGHT VISIBILITY LINE THROUGHLANDSCAPED INTERSECTIONS WHERE THE CLASSIFICATION OF MAJORAND MINOR STREETS CANNOT BE PERMANENTLYESTABLISHED, EACH LEG OF THE INTERSECTION MUST BEANALYZED AS IF THE APPROACH LEG IS A MINOR STREETINTERSECTING A MAJOR STREET.

5 THE PORTIONS OF THESIGHT VISIBILITY ZONE LABELED "N/A" IN THE SETBACK TABLEARE NOT REQUIRED. AT "T" INTERSECTIONS , THETERMINATING LEG WILL ALWAYS BE THE MINOR ROADWAYS AND ROADWAYS WITH INTERSECTINGANGLES GREATER THAN 10 DEGREES MUST BE ANALYZEDUSING D1, D2, THE EYE POSITION, AND THE CAR POSITION ASSHOWN IN THE INFORMATION OF A SIGHT VISIBILITY ZONE DIFFERENT THAN THATSHOWN HEREIN SHALL REQUIRE A SIGHT VISIBILITY ANALYSISPREPARED AND SUBMITTED FOR APPROVAL TO THE LOCALENTITY ENGINEER BY A CIVIL ENGINEER REGISTERED IN THESTATE OF AREA WITHIN THE LIMITS OF THE ARC AND THE CHORD ATTHE CURB RETURN (OFFSET 5' FROM BACK OF CURB)

6 SHALLBE ADDED TO THE SIGHT VISIBILITY ZONE AT EACH CORNEROF EVERY INTERSECTION, EXCEPT FOR 80' x 80' INTERSECTIONS OR PARKING SHALL BE PROHIBITED WITHIN AREASDESIGNATED BY DIMENSIONS "A" AND "D" ON SHEET 1 OF THISDRAWING, SUBJECT TO THE APPROVAL OF THE TRAFFICENGINEER OR DESIGNATED REPRESENTATIVE OF THE ENTITYHAVING WITH A MATURE SINGLE TRUNK DIAMETER LESS THAN10-INCHES, A CANOPY HEIGHT GREATER THAN 8-FEET, AMINIMUM SPACING GREATER THAN ONE HALF THE ROADWAYWIDTH (BACK OF CURB TO BACK OF CURB), AND A MINIMUM OF30-FEET FROM THE NEAREST CURB RETURN WILL BEALLOWED IN THE SIGHT VISIBILITY ZONE, SUBJECT TO THEAPPROVAL OF THE ENTITY HAVING THE AASHTO PUBLICATION A POLICY ON GEOMETRICDESIGN OF HIGHWAYS AND STREETS FOR RIGHT-OF-WAYSGREATER THAN 100'.

7 BASIS FOR ANALYSISTHE FOLLOWING CRITERIA WAS USED AS THE BASIS FOR DESIGNOF SIGHT VISIBILITY ZONES :AASHTO PUBLICATION A POLICY ON GEOMETRIC DESIGN OFHIGHWAYS AND STREETS, 2011 EDITION, CHAPTER IX, USING THEMOST RESTRICTIVE SIGHT LINE DERIVED FROM EACH OF THETHREE POSSIBLE CROSSING MANEUVERS (STOPPEDCONDITION): CASE B3 - CROSSING MANEUVERCASE B1 - LEFT TURN MANEUVER ONTO A MAJOR STREETCASE B2 - RIGHT TURN MANEUVER ONTO A MAJOR STREETTHE ANALYSIS USED A DESIGN SPEED EQUAL TO THE POSTEDSPEED DIVIDED BY (ROUNDED TO THE NEAREST 5 MPHINCREMENT).CAR AND EYE POSITIONS ARE AS SHOWN ON SHEET 1 OF STANDARD DRAWINGSCLARK county AREASHEET 2 OF 8 DWG.

8 NO. REFERENCESIGHT VISIBILITY ZONESAT INTERSECTIONSBCHMNLAGENCY APPROVEDRDATE 01-09-2012' '12' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE48-FT RIGHT-OF-WAYCOMMERCIAL DRIVEWAYCENTERLINECENTERLINE11' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE51-FT RIGHT-OF-WAYCENTERLINECENTERLINE11' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE60-FT RIGHT-OF-WAYCENTERLINECENTERLINE10' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE80-FT RIGHT-OF-WAYCENTERLINECENTERLINE11' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE100-FT RIGHT-OF-WAYCENTERLINECENTERLINECOMMERCI AL DRIVEWAYCOMMERCIAL DRIVEWAYCOMMERCIAL DRIVEWAYCOMMERCIAL DRIVEWAYTYPICAL SIGHT VISIBILITY ZONES FOR COMMERCIAL DRIVEWAY APPROACHESUNIFORM STANDARD DRAWINGSCLARK county AREASHEET 3 OF 8 DWG.

9 NO. REFERENCESIGHT VISIBILITY ZONESAT INTERSECTIONSBCHMNLAGENCY APPROVEDRDATE 01-09-20 TYPICAL SIGHT VISIBILITY ZONES FOR 48-FT RIGHT-OF-WAY ROADWAY APPROACHES12' '12' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE48-FT RIGHT-OF-WAYCENTERLINECENTERLINE11' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE51-FT RIGHT-OF-WAYCENTERLINECENTERLINE11' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE60-FT RIGHT-OF-WAYCENTERLINECENTERLINE10' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE80-FT RIGHT-OF-WAYCENTERLINECENTERLINE11' '11' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE100-FT RIGHT-OF-WAYCENTERLINECENTERLINE48-FT '12' '12' '11' '12' '12' '11' ' '48-FT RIGHT-OF-WAY48-FT RIGHT-OF-WAY48-FT RIGHT-OF-WAY48-FT RIGHT-OF-WAYUNIFORM STANDARD DRAWINGSCLARK county AREASHEET 4 OF 8 DWG.

10 NO. REFERENCESIGHT VISIBILITY ZONESAT INTERSECTIONSBCHMNLAGENCY APPROVEDRDATE 01-09-2010' '10' '10' '10' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE51-FT RIGHT-OF-WAY51-FT RIGHT-OF-WAYCENTERLINECENTERLINE12' '12' '12' '12' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE48-FT RIGHT-OF-WAY51-FT RIGHT-OF-WAYCENTERLINECENTERLINE10' '10' '10' '10' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE60-FT RIGHT-OF-WAY51-FT RIGHT-OF-WAYCENTERLINECENTERLINE10' ' '10' ' ' SIGHT VISIBILITY ZONESIGHT VISIBILITY ZONE80-FT RIGHT-OF-WAY51-FT RIGHT-OF-WAYCENTERLINECENTERLINE11' '11' ' SIGHT