"Why would the TRL need to investigate this?"It seems odd, as if TfL doesn't really believe the Dutch. But sometimes you have to do something to really understand how it works and make the experiences that give you in-depth insight into the details that make all the difference.So it is probably as much about that as re-inventing the wheel. And when it comes to convincing politicians and stick-in-the-mud highways designers, home-grown evidence cannot be dismi