measuring the quality of public transit system tapani särkkä petri blomqvist ville koskinen

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Measuring the quality of public transit system

Tapani Särkkä

Petri Blomqvist

Ville Koskinen

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Background

• Projects for Helsinki City Transport and in a DART-project

• More recently, a project for Ministry of Transportation and Communication– To measure the planned quality of public

transit system

• As a result, a quality measurement system has been developed

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

What is it and what it does?

• An EMME/2-model

• Basis on deterministic assignment

• Generates virtual passengers from each zone to each zone

• Analysis of two way trips possible

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Example - Commuters

• Arrival to the job at 8:00-9:00 am, departure 8.5±0.5 hours later

• Search for optimal paths for the virtual passengers by deterministic assignment– The arrival time is varied 8:00, 8:01, ... , 9:00– When a new one-way connection is found,

search for an optimal path for return trip

• Different types of two-way trips can be analyzed

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

The quality indices of supply

• For each OD-pair the average of – Total transit times and its components– Transit speed in km/h or in relation to the auto

speed – Number of boardings– Headway

• Number of transit connections between the OD-pairs

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Indices of supply vs. demand

• For each O/D weighted average of the indices– Weighting by total demand or transit demand

• Visualization of the OD-pairs that have low values of the index value but high demand

• ENIF for visualizations

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Connections to a destination

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Average speed by destinations

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

No connections (OD-pairs)

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Lowest traveling speed

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Averaging can be dangerous!

• Two example schedules:

• The std or minimum of the index

Example 1 Example 2

08:05 08:05

08:06 08:20

08:35 08:35

08:36… E[hdw]=15 min 08:50… E[hdw]=15 min

Example 1 Example 2

std=14 min; max=29 min std=0 min; max=15 min

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Tulosten visualisointi

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Transit speeds (km/h)

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Number of boardings

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Walking times (min)

matrex Management & Transportation Experts Matrex Oy Teollisuuskatu 33, 00510 Helsinki Puh. (09) 229 33 10 Fax (09) 229 33 150 Email matrex@matrex.fi

Uses of the measurement system

• Analysis of planned quality of transit system • Monitoring it when the supply and the demand

change• ENIF can be configured as an interactive

decision support system that is easy to use• The demand matrix makes the measurement

system very useful• Cost/benefit analyses• …