Managing urban mobilityConstantinos AntoniouAssociate Professor, NTUA Chairman, Hellenic Institute of Transportation Engineers (HITE)

Sustainable Urban Mobility Plans - June 18, 2015, U. of Piraeus1

Double standards

Source: LIVE Singapore! (taxi requests) http://senseable.mit.edu/livesingapore/visualizations.html

2

Not sustainable

• Population increase

• Megacities

• Car ownership

• Peak car?

3

What is the goal?

• Push as many cars as possible to CBD? As many people?

• Minimize overall travel time?

• Maximize overall accessibility?

• [What does accessibility mean?]

4

5

Parking•Every car spends ~23hrs parked every day (>1 spots)

•Halving double-parking in Athens could

•Save 25-135KEuro

•Reduce CO2 emissions by 16-88 tonnes

•Eliminating double-parking could

•Save 50-260KEuro

•Reduce CO2 emissions by 32-170 tonnes

Per 4hr peak period per day! (Kladeftiras and Antoniou, 2013)

6

Accessibility Examples from matsim runs for Zurich downtown

• Matsim

• Sustaincity

• Singapore live isochrones

Accessibility - car Accessibility - bicycle

Source: Nicolai and Nagel, 20127

Carsharing as a viable alternative

Source: Efthymiou et al., 20138

Integrated traffic management and control

• Modeling and simulation

• Different objectives

• Different levels and resolutions

• Traffic management

• Traffic control

• Signals

• Ramp metering

• Bus priority (always?)9

The challenge of traffic predictionPredicting the weather does not change it

But what about traffic prediction?

?

10

Data collection

• Conventional/Emerging

• Vehicle-based

• Point data

• Point-to-point data

• AVI/AVL

• Person-based

• GPS/ cell phone

• Opportunistic

• Social media

• Web-scrapping

11

Big data

• The three Vs

• Volume

• Velocity

• Variety

• Traffic counts, speeds, densities, queues, …

• Images/Videos, …

• Trajectories, …

• "It is not big data if it does not fit in Excel"

12

Looking to the future

• Connected vehicles

• Safety implications

• Operational implications

• Autonomous vehicles

• Already legal in some states (Nevada [2011], California [2012], …?)

• [Both still require human behind the wheel]

13

Park (πάρκο) ή park (στάθμευση)?

14

References

• Efthymiou, D., C. Antoniou and P. Waddell (2013). Factors affecting the adoption of vehicle sharing systems by young drivers. Transport Policy, 29, pp. 64-73.

• Kladeftiras, M. and C. Antoniou (2013). Simulation-based assessment of double-parking impacts on traffic and environmental conditions. Transportation Research Record: Journal of the Transportation Research Board, 2390, pp.121-130.

• Nicolai, T.W. and K. Nagel (2012). Sustain City. Coupling Transport and Land-Use: Investigating accessibility indicators for feedback from a travel to a land use model

15

Managing urban mobilityConstantinos AntoniouAssociate Professor, NTUA Chairman, Hellenic Institute of Transportation Engineers (HITE)

users.ntua.gr/antoniou - antoniou@central.ntua.gr Sustainable Urban Mobility Plans - June 18, 2015, U. of Piraeus

16