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Using EMME/2 in environmental studies in the Czech Republic

Using EMME/2 in environmental studies in the Czech Republic. Mgr. Jiří Dufek, Mgr. Ivo Dostál jiri.dufek@cdv.cz, ivo.dostal@cdv.cz. Centrum dopravního výzkumu (Transport Research Centre) www.cdv.cz, http://szp.cdv.cz. 19 nd EMME2 Users Conference , Seattle , USA.

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Using EMME/2 in environmental studies in the Czech Republic

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  1. Using EMME/2 in environmental studies in the Czech Republic Mgr. Jiří Dufek, Mgr. Ivo Dostál jiri.dufek@cdv.cz,ivo.dostal@cdv.cz Centrum dopravního výzkumu (Transport Research Centre) www.cdv.cz, http://szp.cdv.cz 19ndEMME2 Users Conference, Seattle, USA October19th – 21th, 2005

  2. Introduction • only one licence in the Czech Republic • one year experience in urban transport modeling of Brno city and Zlin town will be presented • pioneer approach: no EMME/2 in Czechia before • distributors are from Hungary (completely different language) • we learn ourselves (no courses in Europe) 19ndEMME2 Users Conference, Seattle, USA October19th – 21th, 2005

  3. Description of city: • 2nd largest city in the Czech republic- approximately 380 000 inhabitants- relatively well developed public transport system (run by local government owned company DPmB) Brno city model 19ndEMME2 Users Conference, Seattle, USA October19th – 21th, 2005

  4. Transportation modes: Brno city model-modes 19ndEMME2 Users Conference, Seattle, USA October19th – 21th, 2005

  5. Transit vehicles (normal and joint) Brno city model – public transport 19ndEMME2 Users Conference, Seattle, USA October19th – 21th, 2005

  6. Used functions: Brno city model - functions • the only 1 volume – delay (BPR function) • 2 transit time functions: ft2 in centre core • 2 simple turn – penalty functions – only penalization without the dependence on turn volumes t functions init a fd1 =(length * 60 / el1 / 100) * (1 + ((volau + volad) / (lanes * el2 )) ^ 5) a ft1 =length * 60 / (speed * 100) a ft2 =length * 60 * 1.8 / (speed * 100) a fp1 =.1 a fp2 =.2 e1=ul1= free flow link speed e2 = @lacap = estimation of a link capacity (depending on link type) 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  7. Network: Brno city model - network • 199 centroids, 1814 regular nodes, more 6000 links, 113 intersections and 57 transit lines, • centroids = specific zones created by an overlapping of the zones of traffic research and urban zones • ui1, ui2, ui3 = numbers of individual urbanistic zones are described in each centroid, • only 1 scenario is done up to now, • Xi and Yi are in the S-JTSK projection (used in Central Europe), • Xi and Yi are in meters = ling length in meters (or 10-meters, 100-meters ...) – recalculation with 2.41 module 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  8. Auto network: Brno city model – auto network  Redlinks = main roads Green links = local roads 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  9. Network: Brno city model - network •  The links are classified with the help of link type. The link type corresponds approximately to free flow speed, which is input as user link data 1 (ul1) as in Table 1. 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  10. Transit network: Brno city model – transit network - 13 tram 11 trolleybus and 33 bus lines  - trams in centre delayed due to high density and sharing the road with cars: ttf = 2 tram lines with background transit network 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  11. Transit network: Brno city model – transit network - trolleybuses and buses used for the connection of the centre and housing zones  - node labels are used for transit stops names lines in centre with node labels - transit stop names 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  12. Auto demand matrix: mf1 Brno city model – matrices • has been created from traffic research and modified • modification in order to have the batch input format • updating: new centroids = new shopping centers, data from population census (2001) Transit demand matrix: mf2 • calculated from mf 1 (resp. mo1 and md1) according to modal split (no modal split model used) • averaged modal split in Brno : 45 % auto, 55 % public transit • vary from 30:70 (centre) to about 80:20 (suburb) • created by matrix balancing, with the help of mo, md and unit matrix (default=1) or exponential function of travel time (examples in the EMME/2 manual) 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  13. Brno city model – matrices Auto and transit travel time matrices • obtained from the fixed demand auto and transit assignment all mf matrices 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  14. Auto assignment: Brno city model – auto assignment - standard equilibrium auto assignment - assigned volumes are stored in an extra attribute (@int). 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  15. Emission calculation (using the module 2.41) Brno city model – NOx emissions - NOx emission factors per a vehicle (g/km) in extra attribute @efnox - @efnox depends on the delayed speed: ul2: (ul2=length*60/timau) - NOx emission (ul3) = @int * @efnox NOx emission factors of passenger cars (from database of Czech vehicles – mainly Skoda) 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  16. Results of NOx emissions calculation Brno city model – NOx emissions The NOx emissions in Brno model network (grams per meter) A screenshot of auto links with NOx emissions 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  17. Brno city model – transit assignment Fixed demand transit assignment - done for the future modeling of the planned actions in Brno: Park and Ride, shift of Central Railway station, etc .. • fixed demand transit assignment = transit volumes of individual lines and segments, wait time factor = 0.5 • weights for perceived individual component of travel time are estimated = 1, except pedestrian • auxiliary transit time weight= 1.3 – better results 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  18. Fixed demand transit assignment results Brno city model – transit assignment • the most of people travel in western part of the inner ring – more 130thousands per a day • the Central Railway Station is a stop with most of people boardingand alighting – more than 65 thousands per a day () All transit lines and nodes with daily boarding > 20000 There is a plan to shift the Central Railway Station on the south (?) 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  19. Auxiliary transit assignment results Brno city model – transit assignment initialboarding (violet) transfer boarding (yellow) - pedestrian traffic innorthern part of city centre 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  20. Auxiliary transit assignment results Brno city model – transit assignment initialboarding (violet) transfer boarding (yellow) - pedestrian traffic insouthern part of city centre 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  21. Verification of the results Brno city model – verification - very long process … (first assigments were totally wrong …) - results of National Traffic Census are available in Brno city but only for the motorways and 1st class roads - approaching to the observed volumes = repeating the process many times (modification of inputs, repeated asignments) - public transport: some data about boarding and alighting in Central Railway Station and in surrounding were available. - which inputs had to be modified ? Almost all: VDF, TPF, TTF, speed (ul1), estimation of capacity (@lacap) … - fixed inputs: network data, auto demand matrix mf1 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  22. Introduction Zlin town model - Zlin is home town of shoemaker Tomas Bata - the goal of the modeling = evaluation of an impact of planned roads - predict the changes in traffic, which should come with the construction of new roads - the model does not involve public transport until now, even though the public transport is well developed in this town - 2 scenarios are dome: present state anf the future state, after supposed 2 new planned roads: „Right Shore“ road and - 42 centroids, 175 regular nodes, 592 links and 4 intersections - nodes and centroids are in the S-JTSK coordinate system (like in Brno city 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  23. Scenario 1 Zlin town model – present situation - the town shape is very extended in east - west direction - one big avenue with heavy traffic burden and a lot of congestions is the horizontal hub of the town - many houses are situated close to this noisy and dusty road. Assigned volumes in Scenario 1 - present state 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  24. Scenario 1 Zlin town model – present situation - the detail of the central part 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  25. Emissions of carbon dioxide (CO2) Zlin town model – present situation - traffic volumes in both scenarios were used for the calculation of carbon dioxide (CO2) emissions from transport - share of light and heavy duty vehicles and buses is 5-7 % on main road and only about 1-2 % in local road - share of buses has been estimated according to public transport timetables 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  26. Scenario 2 Zlin town model – traffic prediction • Assignment of the same matrix on the network with planned roads • efficiency of 2 planned roads: express road "Right Shore" and connection "Prstenska". „Right Shore Road“ „Prstenska“ connection 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  27. Scenario 2 Zlin town model – traffic prediction - the detail of the predicted traffic in central part 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  28. Brno city Conclusions • transport modeling should be an important part of environmental impact assessment especially in Brno city, • planned actions in Brno are: planned shift of Central Railway Station, finalization of the Big City Circle, building of parking houses and its best location, Park and Ride system, • the model should help to evaluate all possible scenarios and optimal strategy, • more scenarios for Brno model are planned, • more advanced modeling techiques(modal split, generalised costs, multiclass and variable demand assignment, etc.. 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  29. Zlin town Conclusions – planned work • The public transit will be add to the databank Other models (national, regional) • The national model is in the beginning (network) • Regional models with a help of coding of national model subnetwork • Intercity matrix = help of population census 2001 19nd EMME2 Users Conference, Seattle, USA October 19th – 21th, 2005

  30. Contact Centrum dopravního výzkumu (Transport Research Centre) Líšenská 33a, 602 00 Brno Czech Republic Section of Environment Křižíkova 70, 612 00 Brno Czech Republic Telephone: (+420) 541 633 717 Fax: (+420) 541 633 742

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