The lack of permanence of BRT has also been criticized, with some arguing that BRT systems can be used as an excuse to build roads that others later try to convert for use by non-BRT vehicles. Examples of this can be found in Delhi, where a BRT system was scrapped, and in Aspen, Colorado, where drivers are lobbying the government to allow mixed-use traffic in former BRT lanes as of 2017. Similarly, the Belfast Chamber of Trade and Commerce has called for bus lanes to be scrapped in certain areas of the city "as an experiment." Bangkok was also making plans to scrap a set of bus-only lanes, as of early 2017. New Orleans ran buses on Canal Street in a dedicated right of way beginning in the 1960s. This style of service was maintained until 2004 when streetcar service was restored on this route segment. This perceived lack of permanence has made BRT lines significantly less attractive to real estate developers than rail lines.