So, durability plays an important role in this aspect. The better the quality of such blocks, the longer will be the life of the road.These blocks are produced in factories in large quantities, so the dimensions can be made accurate as well as the production time is saved in the process.Such blocks provide more advantages compared to disadvantages. Hence, the works need to be precise on the field and is to be well monitored by the site engineers. This would result in breaking of the pattern and eventually the blocks would come out of the place. Interlocking is required to be perfect while laying as sand or other impurities might penetrate the gaps leaving the blocks isolated from the nearby blocks. The interlocking between the blocks was not good initially but as time went on, the design was modified so as to provide perfect interlocking. The shape of such blocks varies as well as in size aspects because the design of these blocks constantly evolved during the years. This problem was noticed by the higher authorities and the implementation of concrete blocks was recommended for ease of work. The roads had to be closed for hours as time was consumed in laying and mixing works. The traditional method was cumbersome as it required skill and accuracy to maintain the thickness of the road in addition to constant supervision by the site engineer. Interlocking Concrete Block Pavement (ICBP) has replaced the conventional concreting technique that required the use of traditional bricks and asphalt on the surface of the road.