Research Article

Decision-Support Framework for Selecting the Optimal Road Toll Collection System

Table 3

SWOT matrix for alternative TCS.

TCSStrengthsWeaknessesOpportunitiesThreats

ManualBackup tolling option for OBU non-equipped motorway users; No user investmentLow LOS, Long queues, High Opex; Increased emissions; Health and safety risks for toll operators-Thefts

ACMAdditional tolling option on toll plazasStopping, small coin values-No exact amount of coins

VignetteStimulating the everyday users to use motorways; Decrease of noise; Decrease of air pollution; Savings in infrastructure costsApplicability; Not fair pricing for foreigners and occasional users; Many stickers on the windshield visually degraded vehicles; High enforcement costs; The difficulties of controlling all vehiclesTemporary tolls; Additional toll system for certain vehicle categoriesAcceptance of a wider driving population; Frequent control of the driver; Being considerably more expensive for occasional users; No interoperability

DSRC
 DSRC with barriersPayment without stopping; No queuing; Decrease of VOC; Decrease of TTC; Reduced environmental degradation; Pay in accordance with travelled kilometres; Large number of DSRC OBUs currently in operationInefficiency for occasional users without OBU; High capital expenditure and maintenance cost of tolling infrastructure; Difficulty in modifying the tolled network once implementedEasy transition from existing manual system to ETC; Ability to provide/support other value added services through the OBU; InteroperabilityLow % of users with OBUs
 DSRC MLFFPayment without decreasing the speed; No delays; Without increase of VOC and TTC; Increase of traffic safety; Minimum of environmental degradation; Pay in accordance with travelled kilometres; High reliability & performance, low signal interference; Large number of DSRC OBUs currently in operation; User friendlyInefficiency for occasional users without OBU; High enforcement costs; The difficulties of controlling vehicles without OBU. Necessity to install road-side infrastructure (gantries) along the road; High capital expenditure and maintenance cost of tolling infrastructure; Difficulty to modify the tolled network once implementedIncreasingly common technology; Efficiency for drivers and toll operators; Ability to provide/support other value added services through the OBU; InteroperabilityAvoiding payment of tolls; Being less profitable in low traffic volume roads

Barcode-basedTechnology which does not require complex system; Pay in accordance with travelled kilometresUnreliability; Lower accuracy during bad weather; Lack of flexibility; Low rate of reading data; Low passenger comfort-Theft of barcode label

InfraredPayment without stopping; No queuing; Decrease of VOC; Decrease of TTC; Less environmental degradation; Pay in accordance with travelled kilometres; High rate of reading data; High reliability; Accurate in all-weather conditionThe problem of interference with other signals; High Opex and CapexEasy transition from existing manual to calm active infrared systemThe problem of interference with the frequencies of other devices; The lack of interoperability

RFID
 RFID with barriersPayment without stopping; No queuing; Decrease of VOC; Decrease of TTC; Less environmental degradation; Pay in accordance with travelled kilometres; High rate of reading dataHigh Opex and Capex; The problem of interference with the frequencies of other devices; Inefficiency for occasional users without OBUIncreasingly common technology; Efficiency for drivers and toll operators; Low RFID sticker/OBU priceThe angle of object installation and compatibility having an important role in the reliability and punctuality of these systems
 RFID ORTPayment without stopping; No queuing; Decrease of VOC; Decrease of TTC; Less environmental degradation; Pay in accordance with travelled kilometres; High rate of reading dataThe problem of interference with the frequencies of other devices; Inefficiency for occasional users without OBUIncreasingly common technology; Efficiency for drivers and toll operators; Low RFID sticker/OBU priceThe angle of object installation and compatibility having an important role in the reliability and of punctuality these systems

Smart cardReduced queuing time; Small decrease of VOC; and TTC; Environmental degradationPayment with stopping; ReliabilityReduced number of toll employeesAn insufficient number of Smart card users;

ANPRPayment without stopping; No queuing; Decrease of VOC; Decrease of TTC; Less environmental degradation; No OBU; Ability to deliver cost savings for automatic handling processing, subject to fine tuning and secondary processing methods used; Most successful when combined with other technologies; No performance restrictions regarding vehicle speedsRequires good quality license plates; Susceptibility to poor lighting and weather conditions; Access to needed vehicle data of foreigners vehicle database; Cost of manual checking that can increase operational costs; Suitability for supporting relatively simple charging policiesContinuous improvements in video camera quality; Always being required for enforcement; Increased overall safetyThefts and toll avoiding; Lack of standardisation of license plates; Manual verification needed for full effectiveness subject to level of “tuning“

GNSS/CNPayment without stopping; Payment without decreasing the speed; No delays and queuing; Without increase of VOC and TTC; Minimum of environmental degradation; Pay in accordance with travelled kilometres; Increase of traffic safety; Flexibility to define and modify what is to be charged and how it is to be charged; Once installed, less costly to maintain; Easily expandable to other roads and regionsPrivacy of the user’s movement; High Opex and Capex; Inefficiency for occasional users without OBU; High enforcement costs; Less used and mature technology than other technologies; Accuracy errors in certain sections of the tolled network, such as parallel free roads and intersections; Additional roadside devices that need to be installedRoute guidance; Increased overall and traffic safety; Ability to provide/support other necessary to be pursued value-added services through the OBU; traffic information, speed controlInteroperability; Gaining the public support regarding the mobility privacy policy

Tachograph-basedAbsence of privacy and data protection issues; Investment in tolling infrastructure relatively independent of the tolled network within the area; Low toll collection costs; Maintenance of tolling infrastructure is limited to cross-border control stationsRigidity in defining and modifying what is to be charged and how it is to be charged within the tolled area; Low accuracy of the tolling technology (±4%); Complex and costly on-board unit; No interoperability; High start-up costs of cross-border control stations; Not commonly used technology-Additional position services which cannot be provided through the OBU; No interoperability

SmartphonesFlexibility to define and modify what is to be charged and how it is to be charged; Little physical tolling roadside infrastructure investment; No need for in-vehicle device or costly enforcement infrastructure; User-friendly interface; Interoperability with other tolling technologies; Low maintenance costsDevice battery duration; Less used and mature technology than other options; Ability to become obsoletely quickly, given technological developments in the sector; Variable proliferation of mobile and smart phones in different areas; Some areas not having appropriate GSM coverage; No proven data about accuracy on certain sections of the tolled network, such as parallel free roads and intersections; Not being able to classify vehicles; No standards currently availableContinuous technological improvements in position mobile phone and smartphone industry;
Possibility of integrating toll payment with other user services; interoperability
Data protection issue in relation to the cellular network used to track user position