* With exceptions for topography or special circumstances.

Transcription

1 Block Length Limits* Salem, OR 600 ft (180 m) Portland, OR Davidson, NC Raleigh, NC Fort Collins, CO Boulder, CO 530 ft 600 ft 1,500 ft Max block size (7-12 acres) 350 ft (by practice) * With exceptions for topography or special circumstances. Intro: 125

2 Abu Dhabi: Limited Connectivity 18 lanes of through traffic Up to 2,000 vehicles per lane hour Up to 36,000 vehicles per hour Intro: 126

3 Vancouver: High Connectivity 100 lanes of through traffic Up to 700 vehicles per lane hour Up to 70,000 vehicles per hour No freeways = twice the capacity! Intro: 127

4 Safety Intro: 128

5 Safety Intro: 129

6 Safety Intro: 130

7 Safety Intro: 131

8 Strong Emphasis on Safety Intro: 132

9 Strong Emphasis on Safety Intro: 133

10 Lane Width Studies on lane widths report mixed results, with some studies finding wider lanes are safer, and other finding wider lanes are more dangerous. In general, lane widths appear to have a U shaped relationship with crash performance, with crashes decreasing until lane widths reach roughly 11.5 feet, and increasing thereafter. Sources: Clark, 1985; Dumbaugh, 2005; Farouki and Nixon, 1976; Fitzpatrick et al., 2001; Gattis and Watts, 1999; Harwood, 1990; Hauer, 1999; Heimbach et al., 1983; Lee and Mannering, 1999; Noland and Oh, 2004; Zegeer, Deen and Mayes,1981. Intro: 134

11 Number of Lanes Studies consistently find that adding lanes increases crashes, while eliminating lanes though road diet projects decreases crashes. Sources: Dumbaugh, 2005; Harwood, 1986; Harwood,1990; Huang, Stewart, and Zegeer, 2001; Knapp and Giese, 2001; Milton and Mannering, 1998; Noland and Oh, 2004; Sawalha and Sayed (2001); Vitalano and Held Intro: 135

12 Key Design Principles 1. The best transport plan is a good land use plan 2. Good street design starts with pedestrians 3. A well-designed street network provides safety for all modes of transport 4. Street connectivity enhances capacity and allows smooth traffic flow 5. Street design reflects Plan 2030 goals for Abu Dhabi Emirate 6. Street design supports estidama principles Chapter 1: 136

13 Design Principles Good & Bad Chapter 1: 137

14 Manual Goals 1. Land use context 2. Safety 3. Efficiency 4. Sustainability 5. Public Health 6. Public Enjoyment 7. Economic Development and Tourism 8. Culture and Image The design of the public realm should respect local culture & traditions Chapter 1: 138

15 Conventional Approach Chapter 2: 139

16 Changing Land Use Context Chapter 2: 140

17 Changing Land Use Context Liwa Road in Madinat Zayed Chapter 2: 141

18 NEW STREET TYPOLOGIES: BOULEVARD WITH FRONTAGE LANE (CITY CONTEXT) SIDEWALKS TRAVEL LANES MEDIANS STREET DESIGN MANUAL Chapter 2: 142

19 NEW STREET TYPOLOGIES SIDEWALKS CYCLE TRACK PUBLIC TRANSIT TRAVEL LANES MEDIANS STREET DESIGN MANUAL Chapter 2: 143

20 COMPLETE STREETS: BALANCE BETWEEN MOBILITY, PEDESTRIAN COMFORT & VISUAL ATTRACTIVENESS STREET DESIGN MANUAL Chapter 2: 144

21 Naming Combinations Chapter 2: 145

22 Street Typology Examples Chapter 2: 146

23 COMPLETE STREETS: BALAN BETWEEN MOBILITY, PEDESTRIAN COMFORT & VISUAL ATTRACTIVENESS STREET DESIGN MANUAL Chapter 2: 147

24 URBAN DESIGN FUNCTION AND AESTHETIC CONSIDERATIONS STREET DESIGN MANUAL Chapter 2: 148

25 Vehicle Speeds Chapter 3: 149

26 Design Process Chapter 4: 150

27 1. Determine and arrange land uses Chapter 4: 151

28 2. Identify Pedestrian Networks Chapter 4: 152

29 3. Identify Transit Networks Chapter 4: 153

30 4. Identify bicycle networks Chapter 4: 154

31 5. Identify and develop vehicle networks Chapter 4: 155

32 6. Determine street cross sections Chapter 4: 156

33 7. Transfer into plan Chapter 4: 157

34 8. Locate street elements Chapter 4: 158

35 9. Note interaction areas on plan Chapter 4: 159

36 10. Rationalize solutions Chapter 4: 160

37 11. Begin urban design and landscape planning Chapter 4: 161

38 Apply performance measures Chapter 4: 162

39 Category 1 Exception Category 2 Exception Exceptions Integration with the approvals process Extract from UPC s Development Review Process Chapter 4: 163

40 Integrating the Design Process with the UPC s Approval Process

41 Street Design Elements Prioritization Chapter 5: 165

42 Pedestrian Realm Zones Chapter 5: 166

43 Standard City Dimensions Chapter 5: 167

44 City Cross-Sections Chapter 5: 168

45 Standard Town Dimensions Chapter 5: 169

46 Town Cross-Sections Chapter 5: 170

47 Mushtarak Cross-Sections & Examples One-way Street Sikka Shared Access Lane Mushtarak in Abu Dhabi Sikka example in Abu Dhabi Chapter 5: 171

48 Pedestrian Crossing Location Chapter 5: 172

49 Metro Tram Bus Rapid Transit Advantages and Disadvantages Of Center, Side, and Sidewalk- Running Tram High quality Metro station entrance Paris, France High quality tram station Minneapolis, USA Chapter 5: 173

50 Bus Taxis Private Transit Comparison of Near, Far, and Midblock Bus Stops Bus Rapid Transit on boulevard Mexico City, Mexico Chapter 5: 174

51 Bicycle Facility Type Cycle Track along Taxi and Private Bus Lay-By Cycle Track along Bus Stop Chapter 5: 175

52 Examples of Bicycle Facilities Typical Cycle Track Typical Bicycle Lane with Parking and Door Zone Typical Yield Lane with Sharrow Marking for Shared Lane Chapter 5: 176

53 Bicycle Facilities at Junctions Cycle Track through Minor Junction Bicycle box, surfaced in the same color as the bicycle lane Shared Waiting Space for Bicyclists and Pedestrians at Junction Chapter 5: 177

54 Junction Design Junction Types Junction Layout Typical Boulevard Junction with Tram Chapter 5: 178

55 Junction Spacing Maximum Town Junction Spacing Through Street Spacing Criteria (meters) Control Measures Chapter 5: 179

56 Sight Distance Curb Extension Increases Visibility Design Vehicle Junction Control Matrix Sight Distance Requirements Corners Designed for Trucks Allow High Car Speeds Chapter 5: 180

57 Corner Radii Actual Versus Effective Turning Radius Example of Swept Path Simulation Chapter 5: 181

58 Traffic Calming Principles & Approaches Relationship between speed and pedestrian fatality Typical Raised Intersection Typical Speed Table Typical Speed Cushions Typical Raised Crossing Chapter 5: 182

59 PEDESTRIAN REALM ZONES STREET DESIGN MANUAL Chapter 6: 183

60 STREET DESIGN MANUAL

61 185

62 Jeffrey Tumlin 116 New Montgomery St, Suite 500 San Francisco CA (415) NELSON\NYGAARD CONSULTING ASSOCIATES 2011