 A large part of the proposed Airtrack route would run on the Waterloo–Reading line which has fifteen level crossings.Opponents of Heathrow Airtrack have expressed concerns about the impact of the scheme on these crossings, and local campaigners have that claimed more frequent trains would increase waiting times at closed barriers and detrimentally affect traffic congestion.Level crossing locations along the route that could have been adversely affected included Egham and Wokingham.