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1
Content available Analysis of the traffic intensity of cargo vehicles in the border points
Pencheva V., Asenov A., Grozev D., Angelova R., Gregoriev I.
Transport Problems
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2018
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T. 13, z. 4
23--36
EN
The present work reviews the border checkpoints in Bulgaria and their work for one year. On the basis of collected information, the seasonal inconsistency of work at the border checkpoints is assessed and their work is modeled as a mass service system (queuing system or theory) to assess capacities to a specific point in the existing infrastructure and organization of work. Capacity of border crossing point is defined as the time for stay of heavy goods vehicles at different incoming flows as well as the limit value of the number of cars that can be handled. For the calculation of the parameter values, an application in a MatLab environment was created. A fractional rational function of the fourth degree is chosen as a numerator and denominator.
2
Content available Analysis and assessment of the regularity of mass urban passenger transport in the conditions of the city of ruse
Pencheva V., Tsekov A., Georgiev I., Kostadinov S.
Transport Problems
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2018
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T. 13, z. 3
109--118
EN
One of the quality indicators of the transport service in passenger transport is the regularity of the movement of vehicles. Apart from the planned traffic intervals, it depends on a number of factors related to the traffic conditions of the public transport in the locality (intensity and composition of the traffic flow, passenger traffic structure, traffic lights regime, atmospheric conditions, etc.). The paper assesses the regularity of mass urban passenger transport traffic in the conditions of the city of Ruse, Bulgaria, by probing the estimation of the arrival intervals of the means of transport at the stops along a given route.
3
Content available Organisation of the work on collecting routes in postal activity through an automated system for collection of information
Pencheva V., Asenov A., Tophu D., Beloev I., Estatiev B.
Transport Problems
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2017
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T. 12, z. 3
147--157
EN
In the present study the transport work on collecting routes in "Bulgarian Posts" EAD has been analysed. Routes have been defined, in which a reduction of the transport costs is possible if pre-collected information about the availability of letters in the mailboxes is available. For this purpose, an automated system was created, which can recognise the availability of letters and send notifications. The method and the recognition criterion are described and the critical value of the colour temperature criterion was experimentally obtained. The system was tested with typical envelopes and the results showed that recognition had a 100% success rate.
4
Content available Transport servicing of the distribution in city
Asenov A., Pencheva V., Savev E.
Transport Problems
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2012
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T. 7, z. 1
95-102
EN
This work gives an overview of the state of transport services for distribution in a city with the size of 100 000 to 200 000. The attention is directed to the conditions in Ruse - one of the 10 largest cities in Bulgaria. Based on a survey of the values of the performance in replacing conventional vehicles powered by internal combustion engines with electric, it was concluded on the effectiveness of using electric vehicles for distribution in the city.
5
Content available Strategic risks of the road freight forwarding companies working with international cargo
Gagova P., Pencheva V.
Transport Problems
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2012
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T. 7, z. 1
87-94
EN
The article explores some of the strategic risks (SR) for road freight forwarding companies Examination of some Bulgarian and European policies and guidelines will be performed to show the development of freight forwarding and the challenges presented by the new "White Paper 2020" EU transport to business.
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