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HomeMy WebLinkAbout20181598_Att. 21 - Superstreets, A Tool for Safel_20160222Attachment 21 u ers ree s "A Tool for Safely and Efficiently Managing Congestion" St�nt�c Prepared for NORTH CAROLINA DEPARTMENT OF TRANSPORTATION TRAFFIC ENGINEERING AND SAFETY SYSTEMS BRANCH Original Superstreet Presentation Created By Stantec Consulting Services Inc. �. NC De artment of Trans ortation p p Mission Statement "Connecting people and places in North Carolina - safely and efficiently with accountability and environmental sensitivity." �- e u e rs ree _ � � � - - - _ _-_ - �� _ _ � • A type of intersection in which minor cross-street traffic is prohibited from going straight through or left at a divided highway intersection. • Minor cross street traffic must turn right, but can then access a U-tu rn to proceed i n the desired direction. *Other confi urations ossible based on site s ecific conditions. �� 9 P P C0111VE11�TI011tAL I11tTERSECTIQII� �, ———— ————-————�———� �a S �Il'�ERSTREET f� _ _ , �� �-- �--; � —————-—————-—------—— ��----� ---- ------ __ �� �, _ _ , � � - _ , ::_ _ ,, ,. �- C011tVE1\lTI�11�AL I11tTERSECTI011t ,��„ : � G L,il.,, , /:.. - _��'- _ _ _ _ _ _ :� .,,., i. 0 � �� _ I � S �JPERSTREET � � ,� ; � ,, �� � ;;,; ,��, _�.' _ - - - - - - _ - _ ..-: -._.__ - _-�- -` ------ - - -��------ - - ,�� - - �,� � �� . - ---- ---- _=-=-------:---- -.� c---------------- �:�.--. - _ ��--- � - � : '� � - - . : � , _ , ,, �- � u e rs ree s. �- n swe r: I m proved Safety Less Travel Time Economically Beneficial Environmentally Responsible �- � u ers ree s . 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J'� _ 'f+Y �' �tl� � • � r � � ��� � � _�" � ����� �'�•y ' ;�' r -- TM i�� j�. •�- � a d .n � T � ; . s' � �. __ T ��. � �: � ,� ���� �'� Conventional Intersection Conflict Points 32 Total Conflict Points Improved Safety �- Superstreet Conflict Points � _ __ __ _ _. �r' ,'` ,.� � ! --- -- � � ��, _ -- , � -_-� - _�, ,, 'r � I _ �iv�r'�I�rg I � ��e�r�l�r�� �r��sir�� I Improved Safety �__ ----- �� _ Total Conflict Points = 14 �- Total I ntersection Confl ict Poi nts Conventional I ntersection — 32 16 Crossing Conflicts Su erstreet Intersection —14 p 2 Crossing Conflicts Improved Safety �- N C 87 at Pean ut Plant Road �e n �� a �� ii� ' �� ��:�53! s � ��i ¢d +."sas' aqt+�i 4t _- _ . _ � 41 r. _ �� 41'_-. f1C$7�$s ... _. . � 41��_. ra ..-.:��- � . - -"� 87 � � VSl![�ons � �����m0 �,� y701 _1 Corner � 0a �y y� g .P� �b qLs � 9� a � ° xa2 �����.�. W Sw� � . � "� �y "1 ��Ehza6EgtMown Cromartie Rd a�l Q�ad fid ,A���3 . � � �,` 5. s7 � P��Rd � �� �a a�1 P,0 ����U P���yt . F � � . yrd �,o, cao� Sr �� ��5� � ii ��� " 87P' '�p. � � a�- ..-_ �oi�<, �— G`g'y� C��fi NC 87 at SR 1150-Peanut Plant Road �e� �r �$� b 'i42 J�� �b 9��� _h�'Ca�... �{,�G� � ��.� 'iS. � NC 87 at US 701 �a,� �ta �p ��' �a ��'�� ��� � .. n�e �n,..,�,��,�m...�,a,��,:�.�,.�„�.m,.��,m.,�,.,..,,..-.��. �.,�,��.�, .�������,�.�..rz.,� � p0�' ■ NC 87 B pass was opened in 1997 y ■ 60 Total Crashes and 5 Fatal Crashes in 8 Years after com letion ��� p � T� €LIZA���THTC��'N S F� 11 �+� �'�a�n ut R�' � 0 14 1 � � 4 , ;30; ,_ SF� 1 1 a� Peanut Rd. NC 87- Peanut Plant Road Collision Dia ram g �� Traditional Solution - Install Traffic Si nal g ` � �,' ��_ - - - ���.-. ,�� i��— - ' i,. �_ Stas�► � '_ ...{w. 'b► �l'� �• • �.r' `•` - _ a : ry ,S'�• � ;.`;ti rr. ? � _ -+ `.f i � 3 j �'� ,�` , ►r`�`+."'t�, - - ' � o. . rI ' , � . � . ♦,y� M' wrn i•R t ; � h - .. ' �� A r � r'� /Lf' .q ti ' �. �� - a , , � �~ i� y} . `�., "��' _���,.., . _ 7. . _' �� ��� . '" ` � ,-� � �~ . . � . �{ ' . 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". __ � 1 +s ,w,�' ' r'� %}_ � �' ��\ � �.� �•+�.. �.�.� ' ` � � .� . � � „ � '�` -�' T'+�,�. . .-�•s',, ', _ , c � _� r� . � 1 1" � i T� ' " �. � , `�••,� - - . ��' • L , . - t_ .ft h `1� - ' .� � � 1 �'� :. � /�'t.: -� - - " . ..� � , -. ` � . ' � < • � � � � � - � . �� r, '� �(�F 5 /� � �. . �I �J14. ��,• '� . �l-"• J ` —��r ^ , � ' � •.3-- - � t�i�. � � � r �N"_ _�,� �'r •-v . _ � ��. ��j�ir _ - � ' , � ' �rn, •� ` , ` �y.+' - �^ � ' � � � . .� 7F "�+ _ " I� �•� �, � r: � r'1' -_� • ,� •"-�• * ''- ' r '���: F; � ✓r ,,� 6 _`'�` � r.,� �� .� , ' �1 � � �� _? r�.rr. , . �� � . .. ''� �.y T �. 'i � .r.� , y' ►-4. �' Y3� I 5 11 e �. � 1 I � �� �� ^�'-, ,�� � , . . •�/mt ' , ..�L . ! , 't ��yv � 4 � _ '.' .-���L "� � ' •w}} �, � � - �� ` . � . ~ �� • `�'P" t.r '`�` ` � • , ' ,�` •�'M � .: _ r . '� �� 4� ri� � � � , '=�'�, - ;.Ke ' ��p� -f � -- ��� ,� {r i\ ��{_ s� . � , ` � . 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To ELIZABETHT4WN i6 �S DEER 45 � 701 35 11 10 9 3� � 2 4 4 8 2 3 2 ����� TO WHITEVILLE �� US 701 N C 87 - Ori i nal Su erstreet Pro osal g p p NC 87 � NC 87 AT PEANUT PLANT ROAD izo sa P 120 440 �`"- ..i:r N C 87 at Pean ut Plant Road � a � NC 87 AT PEANUT PLANT IiQs� Final Su erstreet Confi uration �- p g .. N C 87 at Pean ut Plant Road - _ �� , � } �� "y + R �,� � � � � s ` � � ,� . <' ��� +' � � � �r - �' � �ro��` � � 1; ���� .��.. �� .- ': . � � �� +.�+• . , ' •' � , �� , �,� •.. - i. i.� �•�. �► �.. � . ��`"y�►' +►�'t � b� �'� � w � � . ,� . *� � � Z ti $. ,�,�.. � _. L� y `� � ' ' �. � t�' � � , �+.' ����� � ' *""�� � � �. ,� ,� ,�� � . ,� .�� �,� -. � .� -�_�-�.,��e � � � � 3 years before — 24 crashes, 21 injury crashes . . ��� 3 years after — 2 crashes, zero in�ury crashes ■ ■ ■ u ers ree ene � s an a ac� �es (Research Project 2009-06) �- ■ ■ e uc �on � n ras es Safety impact by collision type for unsignalized superstreets, % Collision Type Crash Reduction % Tota I -46 Fatal and injury -63 Angle and right turns -75 Rear ends -1 Sideswipes -13 Left turns -59 Other -15 �- ■ a e onc us�ons • Unsignalized superstreets: • Reduced collisions for total, angle and right turn, left turn, and fatal and injury � Total collisions reduced by 46% (C-G method) �- Are U-tu rns safe? �- I�CHRP REP�RT 524 Safefy of U-TWrns at Umsagnalized Median Qpemings TF.7aN5P!�F,TAllpl•� F.ES%��PrH P[1i:kC� Accidents related to U-turn and left- turn maneuvers at unsignalized median openings occur very infrequently... The 12 median openings in rural arterial corridors evaluated in detail in this research experienced an average of 0.20 accidents per median opening per year... Based on these limited accident frequencies, there is no indication that U-turns at unsignalized median openings constitute a major safety concern. �- � u ers ree s . Less Trave I Ti m e • Reduced "wait time" or delay • I ncreased roadway capacity �- SF.�vT1�I,E I.��"ERSi��CTl�1�4',� 2 1�'��,�� �i�',�] 3 P.i�i"ASE �il'E1�1T'If)N �,,-- ;-.. �-----�` l��r � i'' .�. � i`� '� 4�} J �� � � / �.�+6 --- c '--- G�C+t's � ��J� y � � r— Tel 4 —_ .� � r s/ -- -- �z+, � �.��,'�� Less Travel Time �q+£'j ������ ��� ���� �GJ�ti��iEX �3',��SEGT'ICl�IP' 3"�'PIL�AL 8 �I"HA'.�� i�l'Z�'R� 1�1�h�' � �,�.�tsi z�a+s �� ■ ■ a�n ree reen �me Signal Timing - Two Phase Signal Timing - Three Phase Less Travel Time Signal Timing - Eight Phase �� ■ u e rs ree as � n . �_ 1T� �J �-_-/ 06 08 � � - - - � _ - - - - - _ � , _ �_ _. ._..- - - - - - - - - � � �� ��---� 02 �4 .�� � 06 08 � � � � � . �t =-- — -- _..� _ "�� �� - - - � - � - -,-. . -. .���- : � � l �` - - - - . . . . _ _ _ � _ � _ _ r/ A 1 1 �—f •—� — � 02 �4 ?HASFNG OIAGfiAll O�TECTPON LE6END �� OETECT€0 Y04EYENT �— W�N6k`fECTF9 YOVEYENT � = UHSIQNALIZE� YOVEIIENT � � � PEOES7RIAN 1104E11�WT Less Travel Time �� Ca acit /Dela I m rovements p Y Y p ✓ I n creased roadway ca pacity ✓ Reduced travel delay ✓ Improved Signal Coordination Less Travel Time �� U-4008 U S 15-501 Cha el H i I I p z . � .� � i . �� ��:- • �.. �-�` �! `„�� �� �y • �� L '` �.� J , ��6i � � �. � . � �4� � . 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"We are close to 90 percent leased with no pad sites left," Elliott remarked. "We've had quite a bit of interest because of the market, which is in a high growth area. And a lot of our tenants say they feel like business has increased since the superstreet was finished." San Antonio Express-News March 17, 2011 �� � u ers ree s . Economicall Beneficial • Preserves the existin facilit g Y • Less expensive than an interchange • Provides good access to both sides of the main road for development �- � �.��� � �.��� � �� � ������ �' �.�,�� '� �"��� �� Economically Beneficial ����� �.�� ���! �� � ������ ����������� ���������� �!� . _- j ' •� , /� , _ _ - � _��. .:� ; . , ;'. . �. Economically Beneficial U PS Expects To Save $600 M i I I ion by Favoring Right Hand Turns -�� Economically Beneficial .-��� �� � �� NPR Jan. 24, 2007 �� � u ers ree s . Environmentally Responsible •Less time spent idling at a red light •Reduction in environmental pollutants (exhaust fumes / fuel usage) •Less acreage impacted by construction and permanent facilit y �- Can Su erstreets Accommodate p Sem i-Trai ler Com bi nations? �- - _�_______ i�,. �_ _� _ ,.� _ -� '.� ',�:..: r. �`'��' � ``-' °�' '� ,. _ - �—_ ----� — ^.� ,,� �� +" � ' '� � � � � .la � � � ��1��� ` '• ' �� � � � I, 1 � �' � {��i � 11 , 't � _ 1 � � - - ,. _ � . _ � _ . _ _ ABSOLUTELY! 1 . - _- ��, � �� ,�� a�i..��s' ��:. ,-�,�,; � , � N , � �y r ��� �- a • • � I . 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'�' - ' i� '� - � �_�����1 L� �� Su erstreets in North Carolina p • Selected Existing Locations — US 15/501 in Chapel Hill, Orange County (Signalized) — US 17 in Pender & New Hanover Counties (Signalized) — US 17 in Leland, Brunswick County (Signalized) — US 23-74 in Haywood County — US 1 in Moore County, Vass Bypass — NC 87 in Elizabethtown, Bladen County — US 601 in Union County — US 17 By-Pass in Martin and Beaufort Counties • Proposed Locations — Extensions to the superstreets in Brunswick & Pender Counties — Poplar Tent Road, Concord (Cabarrus County) — NC 24-27 in Mecklenburg County ��. — Over 60 TIP Projects throughout the state Summa of Su erstreet Benefits rY p • Safety • Ti me savi ngs • I ncreased capacity • Improved traffic flow • Access management • Land use and corridor protection • Alternative to interchan e Less $$$ g • Smaller "footprint" than an interchan e g �- u ers ree om men s Superstreet, I'm sorry I doubted you Joy! The wonks have won my heart with a time-saving traffic plan that works! When people around here first began talking about you, I rolled my eyes. What, don't they see the endless sea of rush-hour traffic north of Loop 1604 where it meets U.S. 281 ? A few U-turn lanes are going to help? Ah yes — only a superstreet can save us now, I scoffed. And then it started to happen. Friends and neighbors compared notes; traffic that used to take an hour and a half out of their days took 30 to 45 minutes, maybe. Commutes got shorter. Afternoon outings became quick trips. I couldn't believe how quickly one could motor up from the Northwoods Shopping Center to the Target on Stone Oak during the height of the silly shopping season. I know it was you, superstreet. Now I know you and applaud you. And I don't understand why we didn't have you sooner. Don't get me wrong — I'm not na'ive enough to believe that you're the answer to all the trafficky problems that loom in the future of the growth area. Sprawl will continue, and so will congestion. I know there's only so much that you and your turning lanes can do. You're not a freeway or — GASP! — a toll road. But I think the lesson I've learned from all of this — and I hope I'm not alone — is to keep an open mind. San Antonio Express-News Dec. 26, 2010 �� Than k You ! �-