Our society reports many negative messages about bicycling in traffic. Bicycling in traffic is considered by many to be reckless and sometimes rude. The most common advice given to cyclists is to avoid busy roads that provide convenient access to important places, which means they should only go to unpopular destinations on undesirable and inconvenient roads. Another popular idea is that cyclists should stay as close to the edge of the road as possible in order to stay out of the way of cars. Getting in the way of cars is considered to be an invitation to death, because car drivers are often expected to run into anything that is slower or more vulnerable. Going together with motor traffic used to be regarded as a nice idea for cyclists, but today it is thought to be suicide. Roads are believed to be designed for cars and not for bicycles. Inferior bicycles may hold that they have the right to use the road, but they had better stay out of the way of superior users or they will be "dead right". As a result of these "common-sense" beliefs, bike safety programs developed by motoring organizations and "pedestrian-style" cyclists during the 20th century attempted to teach cyclists to provide a clear path to motorists at all times by hugging the edge of the road, riding on sidewalks so cyclists can see when to get out of the way. Some towns tried to prohibit bicyclists from operating on important roads or roads without shoulders. Engineering projects designed for bicycle safety have involved construction of side paths to get cyclists off roads and bike lanes to keep cyclists out of the way of motorists. The benefit of these efforts is to protect cyclists from collisions from behind, which are widely believed to be the greatest danger to cyclists and caused by cyclists' failure to keep up with the desired speed of motor traffic. This is the taboo that harms the bicycle transportation policy: that bicyclists must be kept out of the paths of motorists or they will surely be killed. According to the author, bicycling should be   _  .
supported banned controlled cancelled