1.
CO N SIA
SAFE BICYCLE INFRASTRUCTURE
Carsten Wass
Visioning Workshop, 15 September 2014, Istanbul

2.
VULNERABLE ROAD USERS
Pedestrians
Cyclists
Moped riders
CONSIA

3.
ALL INJURIES 2008-12 IN DENMARK
CONSIA
Car
47%
Van
3%
Truck
1%
MC
6%
Bus
1%
Bicycle
18%
Moped
14%
Pedestrian
10%
Vulnerable road users: 42%

4.
WHY VULNERABLE?
Death risk for pedestrians
CONSIA
Car hits Pedestrian
50
60
At 50 km/h 3 out
of 10 are killed
But at 60 km/h
7 out of 10 will die

5.
CYCLISTS ARE AT RISK
The risk per km is four times higher for
CONSIA
cyclists than cars
•Is this a reasonable risk number?
•Risk per trip?
•Replace a car trip?
•Include public transport?

6.
BUT CYCLING IS A NET BENEFIT
0 1000000 2000000 3000000 4000000
Health
Accidents
CONSIA
Injured cyclists Cycle pop

7.
Dark numbers
CONSIA

8.
UN-REPORTED ACCIDENTS
12221
4676
2514
3356
1940
894
420
20
1561
2499
6962
Car
Bicycle
Pedestrian
Moped
MC
Van
Truck
CONSIA
9930
15635
4738
63078
75593
484
17
30
283
415
124
1057
639
0 10000 20000 30000 40000 50000 60000 70000 80000
Other
Police Emergency ward Hospital

9.
DARK NUMBERS CARS AND BICYCLES
Hospital
1%
CONSIA
Police
6%
Emergency
ward
93%
Hospital
1%
Cyclists
Police
16%
Emergency
ward
83%
Cars
So it is not four times as risky to bike –
it is ten times!

10.
INFRASTRUCTURE FROM PLANNING STAGE
 Town planning and traffic planning
should be considered as one
 Mobility plans
 A bicycle plan with a functional
classification of networks is a good
starting point
CONSIA

11.
COHERENT
The network must be coherent and
connect important points for cyclists
Lack of coherence is perceived as a
detour
CONSIA

12.
SAFER BICYCLE NETWORKS
Make bike paths where vehicles travel more than
40km/h
On street where speeds are under 40km/h adjust
volume and speeds of cars
Meticulously redesign points where cyclists cross car
traffic
Safe design of conflict points between vulnerable road
users (at bus stops or between fast and slow cyclists)
CONSIA

13.
SHARING THE STREET
Cyclists may share the street with motor vehicles or pedestrians
Keywords are speed and volume
CONSIA

14.
BICYCLE PATHS
 Safest solution: one-directional at both
sides of the street
 Not bi-directional along a city street
CONSIA

15.
GEOMETRY
 Widths
 Uni-directional
 Bi-directional
 Bike lane
 Shared path
Common path
 Sharing bus lane
 Uniformity
CONSIA

16.
BICYCLE PATH
CONSIA
2.2m (1.7m)

17.
SHARED PATH
CONSIA
1.7m (1.5m)

18.
BICYCLE LANE
CONSIA
1.5m (1.5m)
Often problems with parking

19.
BI-DIRECTIONAL PATHS
CONSIA
2.5m
Min. 1.0m

20.
MORE THAN LANES
 Facilities for parking
CONSIA

21.
UNIFORMITY
Keep design of path along street
CONSIA

22.
MAINTENANCE
Even surface very important for the
use of the path
Regular maintenance
Snow removal at same time or earlier
than on roads
After works in the path it should be
restored as new
CONSIA

23.
ROAD SAFETY INSPECTION
 Bicycle path along Aksu Caddesi, Ekrem Kurt
Blv. and Çobançeşme Koşuyolu Cd. from the
interchange with Kennedy Cd. to the
interchange with D-100 Yanyolu in Istanbul
 Inspected September 2013
 3km
 Bi-directional eastern side of road
CONSIA

24.
BI-DIRECTIONAL PATH
All junctions are signal-controlled
Dedicated signals for cyclists
Separated from vehicle traffic
CONSIA

25.
Exit from parking lot crosses the bi-directional
CONSIA
cycle path

26.
 Cycle track blocked by
stopping and parking
vehicles
CONSIA
Cycle

27.
THREE DIFFERENT SIGNALS FOR CYCLISTS
CONSIA

28.
SLIP LANE ALLOWS FOR HIGHER SPEEDS
CONSIA

29.
BICYCLE PATH AT BUS STOP
CONSIA
Kayseri

30.
Konya
Eskişehir Istanbul
CONSIA
Kayseri
Kayseri
Antalya
Marking
of cycle
lanes

31.
CONSIA
Marking in
junctions
Konya
Istanbul
Eskişehir Kayseri

32.
DELIMITATION BETWEEN PATH AND SIDEWALK
Konya
CONSIA
Eskişehir

33.
PARKING
CONSIA
Eskişehir
Kayseri

34.
CYCLING
Cycling is a serious mode of transport – not just
leisure
Should be treated as other modes
CONSIA