Roads in the city are usually relatively quickly damaged or damaged in a relatively short time after repair. Road users often have to accept the fact that many highways are rapidly damaged, even though they have recently been repaired or rehabilitated. The problem of early destruction of these streets is one of the biggest problems facing the Transport Agency. In general, for the problem of road damage like this, road users always blame the planner or supervisor consultant or the implementing and government contractors who finance the construction of this road, often called unemployed. Such a view should be straightened out because even though the view is true, there are several arguments that show that such a view is not proportional. The condition of early damage is usually caused by 4 problems of heavy vehicle overload. Recognized or not, road damage will be exponentially more quickly due to more cargo, in addition to other factors such as environmental influences, flooding, and policy formulation of targets to the realization of targets such as coaching, development, supervision to operations that are not understood and become ironic. Therefore cbr testing empowers a new technology for roads that are judged to be rapidly damaged.
CBR Testing is used to evaluate and design hardening of road components or can be used as road strength parameters. If the area CBR uses is directly in evaluation or designed without considering the variations caused by the water content. Sometimes it is also not uncommon to present weights for the purpose of repairing damages or means passing temporarily, but weighbridges are more intended as a means of obtaining the distribution of income of fines of violation, while the main objective as controller becomes blurred. There is another reason why roads on the highway are not durable, ie non-conformity with quality standards of road pavement layers for heavy traffic. As one of the standard quality strength of asphalt pavement layers so far known to the price limit of Marshall stability which for heavy traffic is at least 840 kg for British Standard 680 kg with a temperature of 60 degrees Celsius. Minimum requirements Marshall Stability is actually only suitable for heavy vehicles with normal payload, not with excessive loads such as trucks with a capacity of 900 kg for example.