Why Highways are Improved and Built It is better to improve an existing highway than to build a new one. Highways are developed to meet general traffic needs, to eliminate or reduce negative impacts caused by traffic or when changes in land use require it. A new highway must be constructed when the existing highway system no longer meets traffic or land use requirements, and these requirements cannot be met or eliminated by highway improvements or other transportation system developments, or that the negative impacts caused by traffic cannot be sufficiently reduced. .The reasons for improving existing highways and building new ones are:•Improving mobility/travel through the development of residences, workplaces and services.•Requirements better meet transportation needs industrial and commercial activities. • Increased mobility during working hours and free time and growth in the vehicle fleet. • Make highways safer and reduce the negative impacts on the environment caused by traffic. • Improve conditions of movement of pedestrians and bicycles, as well as the use of public transport. •Aim to improve road mobility.The phases of road planningThe planning of road projects is a method which is developed step by step. At each stage, the level of planning precision and decision-making are personalized according to the land use planning. The planning process consists of four stages: feasibility study, preliminary technical planning, final technical planning and construction planning. In minor highway projects with limited impacts, the planning and decision-making stages may be combined. When a new highway or the improvement of an existing highway is planned, the planning should be based on a development plan of the territory meeting the requirements...... middle of paper .... .. can be started. results of the final technical planning: • precise road area • detailed solutions • cost estimation and possible distribution of costs4. constructionConstruction planning belongs to the road construction phase and covers the drafting of documents necessary for construction. In many cases, the contractor is often responsible for developing the construction plan. Within the confines of the final engineering plan, interaction between road builders, landowners, and other affected parties continues throughout the planning and construction phase. In minor projects, the final engineering and construction planning phases may be combined. Compensation is paid for any damage caused to external property during final engineering or construction planning and construction. result of construction planning: •documents required for construction