If the developer does not make agreed payments or if the work is not carried out in accordance with the contract, the motorway authority is empowered to close access to the site. Below are other models related to an S278 app. The agreement between the motorway authority and the developer is called a section 278 agreement and may authorize: provided that the person pays all or part of the cost of the works that can be determined or determined in accordance with the agreement. `Guidelines for agreements with the Secretary of State for Transport under section 278 of the Highways Act 1980 can be found here. Work usually begins within four to six weeks of signing the contract. The agreement sets out the requirements of the local motorway authority and the developer to ensure that the proposed works are carried out in accordance with the approved drawings. An S278 contract is often used to allow development access to the existing road network. It can also be used to improve the motorway network, necessary as a result of the development, or to contribute to the future of work on the wider motorway network. .