Embed Size (px)
Citation preview
Sustainable safety Bicycle inclusive planning and design
Arnold Bongers and Dick van Veen
Content
> Main requirements for cyclists
> The Dutch way: 'Sustainable Safety‘
> Examples of transformations
Main requirements for cyclists
Main requirements
> Coherence > Directness > Attractiveness > Safety > Comfort
Coherence
> Connectivity
> Origin > destination
> Completeness
> Recognisability
> Continuity
> Signposting
Directness
> Minimise detours
> Fine meshed cycle network
> Two directional road sections
> Minimise delays
> “Crossability”
> Traffic light optimalisation
Attractiveness
> Pleasant surroundings
> Small scale & variation
> Shading
> Minimum stress
> Social security
> Presence of people
> Lighting
Attractiveness
> Pleasant surroundings > Small scale & variation > Shading
> Minimum stress > Social security
> Presence of people > Lighting
Safety
> Minimise conflicts
> E.g. segregation
> Minimise outcome of conflicts
> E.g. traffic calming
> Allow for interaction between road users
> E.g. make sure they see each other
> Provide safety margins
> E.g. don’t add up minimum widths
Comfort
> Minimise energy
consumption
> Number of stops
> Smooth road surface
> Minimise gradients
> Make riding easy
> Avoid uncomfortable
manoeuvring
The Dutch way: Sustainable Safety
Sustainable safety
• Dutch traffic safety concept
• Launced in 1997 • Pro-active approach • Prevent and eliminate risk severe injury • Man as the measure of all things
Sustainable safety
Principles: 1 Functionality of roads
highway
urban highway
connector road
artery road
rural road
neighbourhood street
Sustainable safety Car network Delft: Through roads (red)
Connector roads (blue)
Distributor roads (green)
Sustainable safety
Principles: 1 Functionality of roads 2 Homogeneity of mass, direction and speed
Mix if you can, separate if you must!
Sustainable safety
Principles: 1 Functionality of roads 2 Homogeneity of mass, direction and speed 3 Recognizable road design
Sustainable safety
Principles: 1 Functionality of roads 2 Homogeneity of mass, direction and speed 3 Recognizable road design 4 Forgivingness of environment
Sustainable safety
function
use shape
> Balancing function, shape and use
Sustainable safety on the streets
Types cycle-infrastructure
more segregation
higher speeds higher volumes Mixed traffic
(30 km/h)
No segregation
Cycle lane (50 km/h)
Visual segregation
Cycle path (>=50 km/h)
Fysical segregation
29
Networks: finely meshed Car network Delft: Through roads (red)
Connector roads (blue)
Distributor roads (green)
Networks: finely meshed
30 km zones
30 km zones
30 km zones
30 km/h
35
30 km zones
30 km zones
30 km zones and shared space
50 km/h: cycle lanes
50 km/h: cycle lanes
50 km/h or higher: cycle paths
50 km/h or higher: cycle paths
42
50 km/h or higher: cycle paths
Examples of transformations
Creating a 'living' city
45
Designing for cyclists: crossings
46
Creating a living city
47
Spui, (former) through road in The Hague
Creating a living city
48
Spui: The Hague - traffic calmed inner city
Creating a living city
49
Spui: The Hague - traffic calmed inner city
Creating a living city
50
Local road: Fryslan, The Netherlands: From thoroughfare back to village road
Creating a living city Haren: Thoroughfare through the village - before
Creating a living city Haren: living streets with strong social interaction
Creating a living city Haren: living streets with strong social interaction
Creating a living city Shared Space: living streets with strong social interaction
And now the case How to solve problems? - is the road a part of the cycle-network? - what is the function of the road? - are bicycle facilities available? - can we make bicycle facilities? - is there an alternative for the cars or bicycles?
www.mobycon.com
