The width of the busway is narrower than the width of a single-carriageway rural all-purpose road built to 2009 standards (excluding attendant verges and footpaths/cyclepaths in both cases). A conventional road would have been too wide to fit on top of existing railway embankments and across the under-bridges along parts of the route. The maintenance track is either adjacent to the busway on flat land, or to one side at the foot of the former railway embankments—the combined width of the maintenance track and the busway being considerably wider than that of the railway it had replaced. To negotiate Trumpington Cutting on the southern section, a narrower maintenance track was required, along with the use of a bi-directional single track busway in order to fit within the width of the former double-track railway line. The southern section will be restricted to single-decker buses. In May 2012 the County Council received a petition calling for better night-time lighting for the bridleway alongside the southern section, and the need for this was subsequently acknowledged by the Council. Work on lighting was completed in autumn 2015.