3. Chicagoans experience city life through its streets.
We must build and maintain our roads
for healthy business districts, vibrant neighborhoods, and high quality of life
– and move away from the narrow perspectives of the past.
We must measure success on safety, choices, and livability.
Gabe Klein, Commissioner, CDOT
http://www.cityofchicago.org/content/dam/city/depts/cdot/Complete%20Streets/CompleteStreetsGuidelines.pdf
Released
April 2013
11. Why do we need Complete Streets?
Economic vitality and viability
Traffic safety
Travel choices
Sustainable access and travel
12. Three Patterns for Complete Streets
1. Connected and Complete Street Network
Complete streets function as part of a connected and complete street
network with different types of streets serving different functions
2. Convenience, Comfort and Safety for Vulnerable
Road Users
Complete streets are convenient, safe and comfortable for all, but especially
for vulnerable road users
3. Sense of Place
Complete streets are places. Never just conduits for travel
15. versus
Risk of Severe Injury or Fatality*
Chance of being Severely Injured
30% Higher
Chance of being Killed
50% Higher
*Given that an injury occurred
16. Odds of Dying in a Road Accident
based on Intersection Density*
1 in 200
1 in 500
*Given that an injury occurred
20. Characteristics
of a Complete Street Network
1. High Level of Connectivity at
Neighborhood
City-wide
Regional Scale
1. Frequent Intersections
2. All streets are walkable and Crossable
3. Wide variety of street types (Boulevard, Avenues, Streets, Lanes)
24. Vulnerability of Different Types of Road Users
Chance of Dying if Injured in Road Accident
Source: Bicycle Safety and Mode Choice (Garrick 2008)
Based on 24 California Cities
25. Chance of Pedestrian Fatality vs. Impact Speed
http://webarchive.nationalarchives.gov.uk/+/http://www.dft.gov.uk/foi/responses/2005/nov/203040message/paperaboutthedepartments20302445
26.
27.
28.
29.
30. Street Design Factors affecting Speed
Street cross-section Design
Intersection and Crossing Design
Relationship to Land and Building
33. Context Sensitive Solutions in Designing Major Urban Thoroughfares for Walkable
Communities
Typical Width on Urban Thoroughfares
9 to 12 ft
Width of All
Elements vary
depending on
Context
7 to 8 ft Next to Parking
We Need > 5 feet
> 7 is probably too much
To tame the street so all street users can share in its function for their specific needs, We have to reduce the vehicle operating speeds.
A schematic diagram of some of the components of an urban thoroughfare design. Point out a few of the components. Explain the complexity of integrating the components, particularly in constrained right-of-way.