SATC 2017 Influence Factors for Passenger Train Use 12 July 2017 Pieter Onderwater Avisha Kishoon pieter.onderwater@smec.com Check logo: SMEC, UCT, DoT, UNAM, etc.
Presentation Outline Introduction Background Methodology Elasticities Influence parameters Results Socio-economic Train system Other transportation systems Summary and conclusion
Background Influence Factors for Passenger Train use. PhD study on PT/Rail Planning (at UCT) by Pieter Onderwater PT passenger demand planning parameters, for: 2 types of passengers: Captives, and Choice Users 2 types of PT Train systems: PRASA Metrorail, and Gautrain This paper has the first (qualitative) result of: Concept frameworks and analyses Scientific (international) literature study (draft) parameters Future developments, impacting on Train use To be continued
Methodology Elasticity = % change in demand, in response to 1 % change in a variable Price, Time Mostly Negative = increase in price decrease in demand Mainly Inelastic = elasticity < (+/-) 1 Wide variety… = personal, trip purpose, etc. range / average Cross-Elasticity: impact by variables of other Transportation systems Elasticity of other mode * substitution (mode share, diversion) Mostly Positive, very Inelastic, location specific no set value Trip ‘budgets’: Elasticity Money Price Time Time (Value of Time Generalised Costs) Effort (physical, mental) … (Willingness to Pay, Subjective time)
Influence parameters Public Transport / Train demand depends on: Socio-Economic aspects Population, jobs, economic growth, car-ownership Train system aspects Fare price, travel time, comfort, capacity constraints Other Transportation systems’ aspects Fuel price toll and parking costs, congestion, other PT’s LoS
1. Socio-Economic aspects Population and Jobs Study area average: Determinative aspect: Socio growth Population Economic growth (real) GDP / capita Study area specific: Determinative row/column in OD: Variation per station area Train Peak travel = Commuters Jobs (= GDP) Off-Peak travel = Social, Leisure, etc. Population Per group: Captives, Choice Users Car-ownership (=GDP) Airport train service (e.g. Gautrain) Airport pax (= GDP) Elasticity = + 1 (plus other aspects / impacts) Average annual Mobility growth = 3 % local variations Be aware of double counting
2. Train system Fare price Captives are more price sensitive, compared to Choice Users However, Captives have less alternatives walk, or not travel Low Price-Elasticity for making a PT trip High Price-Elasticity between PT modes (train, bus, minibus-taxi) Off-Peak, Weekend / Social, Leisure travellers are more price sensitive, compared to Peak / Commuters Generally factor 1½ - 2 higher Airport trips are less price sensitive Price Elasticity = between – 0.1 and – 1.0 (generally: – 0.3 to – 0.6) PT fares normally increase in line with CPI (5-6 %) No impact
Train system Trip Time and Frequency Choice Users are more time sensitive, compared to Captives “Time is Money” Peak / Commuters are more time sensitive, compared to Off-Peak, Weekend / Social, Leisure travellers Airport trips are more time sensitive (stress, delays) Time Elasticity = between – 0.4 and – 0.9 Trip time of train service is mostly constant No impact Unless serious improvements (e.g. PRASA Modernisation) Frequency increase reducing waiting time small changes (few minutes) Little impact + 1 to 2 % more Train use, once-off Unless crowding higher freq = more capacity = more comfort
Train system Effort: convenience, comfort Choice Users are more effort sensitive, compared to Captives They have a (convenient / comfortable) alternative car But very difficult to quantify… Safety (subjective) ‘Traditional’ PT is deemed not to be safe hardly used by Choice Users… Discomfort due to crowding little extreme Standing passengers: subjective time = * 1.5, increasing to * 2.0 Seated passengers: subjective time = * 1.0, increasing to * 1.6 Insufficient capacity: people left behind on the platform This will reduce / cap the potential growth Comfortable access, waiting time at station Subjective time = * 1.2 to 3.0 (average: * 2)
Train system Capacity Constraints Station Accessibility Quality of public realm: impacts on walking, PT ranks Local congestion: impacts on drop-off/pick-up, Parking, PT feeders, etc. Station Parking (Choice Users only) At specific stations only Capacity Restrictions at the end of AM peak and in off-peak No constraints in weekends This will reduce / cap the potential growth
3. Car/Road system Fuel Price Off-Peak, Weekend / Social, Leisure travellers are more price sensitive, compared to Peak / Commuters similar for cross-elasticity Generally factor 1½ - 2 higher Impact on: Choice Users car costs Captives PT costs (relatively smaller impact) Price Cross Elasticity = + 0.1 to + 0.4 (varies widely: local circumstances) Fuel Price determined by Crude Oil and Dollar Exchange highly volatile: Expected annual increase = CPI + 5 % + 1 to + 2 % more Train use = *
Car/Road system Toll and Parking For Choice Users mainly: E-toll in Peak has limited impact: Off-Peak: more impact Applicable on limited roads Capped at R225/month = R5 per trip for regular motorists Full price Non-Compliance… Parking costs has limited impact: Commuters (Peak) parking on employers premises Social (Off-Peak) limited destinations: full payment, but limited time Price Cross Elasticity = + 0.0x Relatively small portion of total car travel costs Other car costs normally increase in line with CPI (5-6 %) No impact
Car/Road system Congestion Peak traffic is congested Off-Peak traffic is hardly congested (yet) Impact on: Choice Users car travel time shift to Gautrain not really to other PT Captives road based PT time shift to Metrorail Time Cross Elasticity = + 0.4 (varies widely: local circumstances) Peak Congestion might increase with > 4% annually + 1 to + 2 % more Train use Depending on socio-economic developments
Summary PT / Train patronage depends on: Rail patronage Annual growth: Socio-Economic Population / Jobs growth + 3 % average Train system Fare price 0 Trip time, frequency + 1 to + 2 % (once-off) Other quality improvements + Growth Capacity constraints – Capped growth Other Transp. systems Fuel price + 1 to + 2 % e-toll, parking costs + 0 Congestion + 1 to + 2 % Total annual average (+/– local circumstances) + 5 to 6 % ( – Capped)
Conclusions So far, the elasticity parameters are based on international scientific literature: My PhD study will further investigate the SA context Revealed and Stated Preference studies for Gautrain and PRASA Metrorail Train demand can potentially grow with some 5% annually: Half the impact by socio-economic growth (population, jobs, GDP) Half the impact by road system (fuel price, congestion) Once-off impacts by Train system improvements (e.g. PRASA Modernisation) However, current Train systems are restricted by their capacity reduced growth Rolling Stock capacity = crowding, low freq. Parking capacity, station accessibility Programmes in place to increase capacity: New Rolling stock Gautrain, PRASA PRASA Modernisation Questions?: pieter.onderwater@smec.com