THE NACTO MANUALS AND DESIGNING FOR VISION ZERO ZAKI MUSTAFA SHIRLEY ZAMORA

Transcription

1 THE NACTO MANUALS AND DESIGNING FOR VISION ZERO ZAKI MUSTAFA SHIRLEY ZAMORA

2 NACTO Design Guides 2

3 City of Los Angeles Vision Zero 3

4 Vision Zero Roscoe Boulevard Corridor SHIRLEY ZAMORA TRANSPORTATION ENGINEERING ASSOCIATE

5 CORRIDOR CHARACTERISTICS 5 ROSCOE BOULEVARD BETWEEN THE 405 FREEWAY & WOODMAN AVENUE 2.3 miles Boulevard II Over 41,000 ADT feet wide Existing: 2 through lanes in each direction + 1 peak hour lane in each direction + LT pockets/2wltl

6 COUNTERMEASURE CROSSWALKS 6 New continental crosswalk with limit line across minor street Upgrade all existing crosswalks New crosswalks on major street (specials)

7 ROSCOE BOULEVARD CORRIDOR CONTINUE LOWER LEFT CONTINUE LOWER LEFT CONTINUE LOWER LEFT St. Genevieve PVT School CONTINUE UPPER RIGHT CONTINUE UPPER RIGHT CONTINUE UPPER RIGHT

8 COUNTERMEASURE TRAFFIC SIGNAL MODIFICATIONS 8 Protected-only left turn and protected/permissive left turn phase o LT vs TH Protected-only right turn and protected/permissive right turn phase Leading pedestrian interval (LPI) Increase pedestrian clearance time Increase yellow/all-red time o Broadside

9 ROSCOE BOULEVARD CORRIDOR CONTINUE LOWER LEFT CONTINUE LOWER LEFT CONTINUE LOWER LEFT St. Genevieve PVT School CONTINUE UPPER RIGHT CONTINUE UPPER RIGHT CONTINUE UPPER RIGHT

10 COUNTERMEASURE REGULATORY SIGNS 10 Vehicle vs Pedestrian Crossing

11 COUNTERMEASURE REGULATORY SIGNS (continued) 11 LT vs TH (only during peak hours)

12 ROSCOE BOULEVARD CORRIDOR CONTINUE LOWER LEFT CONTINUE LOWER LEFT CONTINUE LOWER LEFT St. Genevieve PVT School CONTINUE UPPER RIGHT CONTINUE UPPER RIGHT CONTINUE UPPER RIGHT

13 COUNTERMEASURE Special 1: Crosswalk Consolidation and Traffic Signal Modifications 13 Location: o Roscoe Blvd and Noble Ave (Vista MS & Noble ES) EXISTING PROPOSED

14 COUNTERMEASURE 14 Special 1: Crosswalk Consolidation and Traffic Signal Modifications (continued) ENTRANCE ONLY Requires: N/B & S/B: PRT E/B & W/B: PPRT E/B & W/B: PLT

15 COUNTERMEASURE Special 2: Scramble Crosswalk 15 Location: o Roscoe Blvd & Van Nuys Blvd DOT exclusive pedestrian phase criteria satisfied Outcomes: o No Right Turn on Red signs in all directions o Reduction of right-turn vs pedestrian collisions o Increase vehicle delay/queuing and pedestrian waiting time

16 SIGNAL COUNTERMEASURE Special 3: Rumble Strips 16 Location: o Roscoe Blvd & Van Nuys Blvd Determining factor: o Collisions involving DUI Outcome: o Alert drivers

17 COUNTERMEASURE Special 4: Raised Crosswalk, Pedestrian Refuge Island and RRFB 17 Locations: o Roscoe Blvd at Wakefield Ave o Roscoe Blvd at Columbus Ave

18 COUNTERMEASURE Special 4: Raised Crosswalk, Pedestrian Refuge Island and RRFB (continued) 18 Determining factors: o Collision patterns o Distance bet. controls o Pedestrian activity o Available access routes o Critical speed Outcome: o Left-turn pockets will be removed/prohibit left-turns (preferred at T type intersections) o Pedestrian refuge area o Better pedestrian visibility o Reduced speeds o Lower traffic volumes o Reduction in exposure time

19 COUNTERMEASURE Special 4: Raised Crosswalk, Pedestrian Refuge Island and RRFB (continued) 19 Challenges with a raised crosswalk: o Ambulance and bus use Design should be less severe than a speed table o Drainage issues

20 Vision Zero Corridor Countermeasures ZAKI MUSTAFA

21 OTHER COUNTERMEASURES 21 Offset (Danish) Crosswalk Jogged intersections Better visibility Less parking removal Pedestrians will be able to look directly at on-coming traffic

22 OTHER COUNTERMEASURES 22 Two Stage Bike Box Neighborhood Enhanced Network or Tier 2 and 3 Bike Lanes No Right Turn on Red signs for the minor streets Bike box should not block major street curb lane through traffic

23 OTHER COUNTERMEASURES 23 Bike Wrong Way Sign Vehicle vs Bike (traveling wrong way) Temporary countermeasure S

24 OTHER COUNTERMEASURES 24 Pedestrian Only Signal Phase Pedestrian and vehicular volumes Proximity to schools Not intended to accommodate diagonal crossings Modified to specific times of day S

25 OTHER COUNTERMEASURES 25 In-Pavement Crosswalk Flashers 10 year old installation

26 OTHER COUNTERMEASURES 26 In-Pavement Crosswalk Flashers (continued) Recent installation

27 OTHER COUNTERMEASURES 27 Demand Based Scramble Crosswalk (Wild Idea)