Nowadays the manufacturers offer a variety of mobile road laboratories, which are equipped with systems for measuring the automobile roads' properties and further assessments of their exploitation conditions. The absence of one or several of these systems in the lab equipment leads to the price reduction for consumers; however, it also lowers the effectiveness of the diagnostic process. This article suggests that preliminary research of the effectiveness of the automobile road diagnostic process be conducted using mobile road laboratories in various implementations by the means of an imitation model design. The main indicators of the effectiveness will be time spent on the road section diagnostics as it constitutes the labour costs, the necessary amount of fuel, and the overall funding. This diagnostic process model is implemented using a computer programme. It calculates and assesses the road conditions that may affect the laboratory's speed, number and duration of stops necessary for manual measuring which depends on the proper equipment. The designed model allows to analyze the duration of time spent on road diagnostics. The results allow for advance assessment of the financial expenses, including the cost of labour, together with diagnostic planning of the automobile roads of a given region and its specifics.

Keywords: automobile road diagnostics, model design, road conditions, effectiveness research

This article analyzes the existing technical means designed to monitor automobile roads and transportation infrastructure, including their main disadvantages. It demonstrates the research results of the potential capabilities of the existing technical means for creating a multifunctional mobile road laboratory, implementation of which would allow to solve a wider range of tasks. These tasks amount to measuring in unfavourable conditions, including the roads without hard surface, searching for automobile roads, conducting water barrier research, and identifying the nature of large damage to the automobile roads and transportation infrastructure. The multifunctional laboratory's equipment is based on the existing technical means, which are resistant to the negative environmental factors. Moreover, some systems are subject to amelioration and additional design, particularly the transverse surface evenness measuring system. Besides the traditional technical systems, which equip the existing mobile road laboratories, the usage of aerial drones is also suggested.

Keywords: automobile road monitoring, transportation infrastructure, road laboratory, aerial drone