South Essex Rapid Transit

South Essex Rapid Transit (SERT) is a proposed public transport scheme which would provide a fast, reliable public transport service in, and between, Thurrock, Basildon and Southend-on-Sea in Essex, England. SERT buses would have priority at traffic lights and would also have dedicated lanes where possible. A planned opening in 2012 is dependent on approval of £53 million from central government as well as additional funding from other sources.

The scheme's future has been put into question as in October 2010 the Department for Transport placed the project into the pre-qualification pool. Planned projects in this pool have the least chance of being funded, and therefore, developed in this governmental spending period.