Document Type : Case Study
Authors
1 Senior Expert in Transportation Planning, TOPEKA Consulting Engineers, Mashhad, Iran
2 Expert in Road and Transportation, TOPEKA Consulting Engineers, Mashhad, Iran
3 Technical and Development Deputy, Intra-City Cargo Transportation Management Organization, Mashhad, Iran
4 Expert in Transportation Studies, Intra-City Cargo Transportation Management Organization, Mashhad, Iran
Abstract
According to the temporal-spatial limitation plan in Mashhad, the traffic of heavy and semi-heavy vehicles in certain areas of the city, which mainly includes the central area, is only allowed from 10:00 PM to 9:00 AM. This leads to the replacement of more light cargo vehicles with fewer heavy and semi-heavy cargo vehicles. On the other side, if this limitation plan is not applied, assuming the constant tonnage of the transported cargo, the number of pickups will decrease while the number of heavy and semi-heavy cargo vehicles will increase. However, the decrease in the number of pickups is more than the increase in the number of others. The main purpose of this study is to investigate the results of restrictions and changes in the composition of the cargo fleet from the traffic, environment and safety point of view. For this purpose, version 8.01 of Aimsun traffic simulator software was used. To evaluation of the effectiveness of the mentioned changes, two scenarios were simulated: the existing situation and the condition of not applying temporal-spatial restrictions. The results showed that in the case of applying restrictions, traffic, environmental and safety parameters are improved. But this improvement is very small. This can be seen as the result of two reasons: most of the road network in the central area of Mashhad is low-capacity with an inappropriate level of services, therefore, even if the restriction is not applied, heavy goods vehicles, except in necessary cases, don't willing to cross this area. Also, due to the weak control and the lack of enough smart equipment, the number of violations is high and this plan is not fully implemented.
Keywords
Atiyesaz Consulting Engineers, 1388 , “Revision and development of the prohibited traffic area of Mashhad city”, Client: Mashhad Transport and Traffic Organization, Persian.
Ghaemi, Ali, 1393, “Evaluating the impact of heavy vehicles on the traffic flow and the amount of emissions caused by it in urban networks using traffic simulation”, transportation engineering journal, 4th edition, Persian.
Iran University of Science and Technology, Office of Scientific and Industrial Cooperation of Transportation Research Center, 1390, “Studies of the master plan of cargo transportation in Mashhad”, Persian.
Javanbakht, Rasul, 1395, “Prediction of driving violations based on personality traits and excitement seeking of drivers”, Persian.
Mashhad Transport and Traffic Organization, 1400, “Transportation and traffic statistics of Mashhad city”, Mashhad, Persian.
Moghaddari, Ali, 1398, “Modeling the violations of heavy fleet drivers using the driving behavior questionnaire”, Persian.
Naeemi, Jaber, 1395, “Analysis of the contribution of the vehicle type at fault in the accident", 2nd International Conference on Urban Planning, Management and Urban Development, Shiraz, Persian.
Sabur, Hadi, 1396, “Investigating the impact of traffic violations on traffic performance measures based on simulation studies (Mashhad city case study)”, Persian.
- Schroeder, 2014, "Application of AIMSUN microsimulation model to estimate emissions on signalized arterial corridors," Transportation Research Record, pp. 75-86.
tinnews.ir
)