There are many reasons to include bicyclists in your consideration of traffic enforcement; here are just a few:
Many bicycle crashes are caused by unlawful behavior. Enforcement intervention that changes operator behavior can save lives and prevent injuries.
NHTSA studies have shown that public education alone is not effective in changing behavior. This is why NHTSA encourages States to use a comprehensive approach to increasing safety belt use, for example. The approach includes public information and education, media messaging, along with enforcement efforts. NHTSA strongly believes that a law enforcement presence is necessary to influence behavior change. Further, a one- time or even annual effort is not frequent enough to create a change in behavior or sustain the desired behavior. These same principles apply to enforcement of laws intended to promote safe behaviors among cyclists and motorists sharing the roadway.