There is no reason public transport users should be treated as second-class citizens at traffic lights. Public transport is the responsible choice. It causes less harm to the environment and less road congestion. Car users are effectively putting their own convenience above the good of the community.
Traffic light priority should not be restricted to premium SmartBus and tram routes. Passengers everywhere can benefit from faster journeys and more reliable timekeeping.
By this method, when the time comes to upgrade the route to full SmartBus standard, some of the work will be done already, reducing the cost of the project. It will also prevent expensive mistakes due to previous works having to be undone or heavily modified in order to accommodate the SmartBus infrastructure.
Contracts with manufacturers of SmartBus hardware should include standards for reliability and accuracy, which would force them to upgrade or replace faulty installations. Electronic displays that are inaccurate are worse than useless.
Several experiments have been undertaken into possible methods of reducing delays to trams. The results of these should be assessed and the most effective method(s) deployed system wide.
In particular, measures to enforce laws about cars delaying trams (eg cameras) should become widespread, to encourage motorists to change their habits and allow trams an uninterrupted journey.