„Friedrich List“ Faculty for Transportation and Traffic Sciences , Institute for Traffic Planning and Road Traffic

Chair for Road Traffic Engineering and Theoretical Transportation Planning

- Cities for Innovation in Road Safety –

A Traffic Safety Plan for Dresden

Brussels, 07.Oct.2008

00 Overview

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 1

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 2

01 Introduction

Traffic Flow:• Traffic flow and capacity for all traffic modes• Coordination of design and operation for intersections• Traffic management in networks• Characteristics of non-motorised road users

Road Traffic Safety:

• Relationship between traffic flow and traffic safety• Parameters to describe safety relevant driving behaviour and accident

situations• Methods of Road Traffic Safety Analysis• Training of road safety auditors

TU Dresden, Chair for Road Traffic Engineering

01 Introduction

General Information:

• Capital of Saxony with about 500.000 inhabitants.

Road Traffic Safety:

• Overall about 15.000 accidents (including material damage) in 2005, more than 2.500 people were injured.

• Every year about 100 persons get injured in accidents at turned-off traffic lights.

• Every year about 90 collisions of left-turning drivers with oncoming traffic take place at traffic lights.

• Approximately 500 persons are injured in right-of-way-accidents involving bicyclists every year.

City of Dresden

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 3

01 IntroductionAccidents with pedestrians and bicyclists (2005)

All accidents:

Severity:

383 1.694 12.804

34

2

39

32

10

23

0

10

20

30

40

50

60

70

perc

en

t [%

]

pedestriansbothbicyclists

00

Severe Injury +Fatalities

Slight Injuriy

Material Damage

46

65

2

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 4

02 BackgroundProcedures

Safety-analysis according to Network Safety Management (NSM)• Evaluation of the existing network

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 5

02 BackgroundProcedures

Safety-analysis according to Network Safety Management (NSM)• Evaluation of the existing network

Local Accident Investigation• Black Spots in the existing network

Road Safety Audit• Review of the design process

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 6

Local accident investigation

One-year-accident-type-map (2005)

03 Major Issues

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 7

Three-year-accident-type-map (2003-05)

Local accident investigation03 Major Issues

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 8

Accident black spots

Local accident investigation03 Major Issues

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 9

03 Major IssuesAction plan for 60 black spots

Approach:

• The spots were ranked by means of cost-benefit-estimations.• Based on the ranking of black spots, an action plan was worked

out in order to eliminate 60 black spots in Dresden.

Results:

• The investment costs for the measures suggested amount to about 2.800.000 €.

• The annual cost can be estimated at around 380.000 € p. a..• The benefit adds up to 5.600.000 € p. a..• This leads to a cost-benefit-ratio of approximately 15.

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 10

NSM-Analysis03 Major Issues

A B

accident cost rate (A) accident cost

rate (B)

basic accident cost rate

basic accident cost rate

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 11

NSM-Analysis03 Major Issues

A B

basic accident cost rate

basic accident cost rate

safety-potential A safety-

potential B

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 12

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 13

03 Major IssuesNSM-Analysis

Sicherheitspotential vUKD [1000€/(km*a)]

<0 (177)>0 (67)>1000 (26)>200 (31)>400 (19)>600 (12)>800 (8)

>200 (31)>400 (19)>600 (12)>800 (8)( )>1000 (26)

Safety potential [1.000€/(km*a)]

NSM-Analysis03 Major Issues

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Anteil Netzlänge

verm

eidb

are

Unf

allk

oste

n U

K(P

,S)

Anteil an Abschnitten mit positivem Sicherheitspotential

Part of the network with a safety potential

length [% of the network]

avo

idab

le a

ccid

ent

cost

[%

]

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 14

04 Conclusions

Results:

• The City of Dresden is now fitted with a short-term concept in order to improve the road traffic safety at 60 spots effectively .

• The action plan is ranked by means of benefit-cost-ratio and allows a highly efficient use of resources.

• Results are provided to support a safe development of road infrastructure in the long term.

• The analysis of safety potentials throughout the main road network builds a basis for an appropriate consideration of road traffic safety in the future planning process.

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 15

„Friedrich List“ Faculty for Transportation and Traffic Sciences , Institute for Traffic Planning and Road Traffic

Chair for Road Traffic Engineering with Department of Theoretical Transportation Planning

- Cities for Innovation in Road Safety –

A Traffic Safety Plan for Dresden

Brussels, 07.Oct.2008

02 BackgroundStrategies

1. Short-term strategies: • Duration of one year.

• Mainly activities dealing with quality management.

2. Medium-term strategies: • Duration of two further years.

• Primarily activities in the range of network analysis as well as road safety audit.

End of project

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 18

Strategies

1. Short-term strategies:

2. Medium-term strategies:

End of project

− Local accident investigation

− Quality management

− NSM-Analysis (major-road-network)

− Multi-modal-analysis

− Road safety audit

1st year

2nd - 3rd year

action plan

02 Background

TU Dresden, 10.10.2008 A Traffic Safety Plan for Dresden Slide 19