The road traffic regulations (StVO) apply. Generally valid and usual rules of conduct.
It should be noted that road cycling carries an increased risk of accidents and injuries. Despite careful route planning, a basic risk always remains. Preparation through endurance training, appropriate practice and education, and personal prudence reduce the risk of accidents and dangers.
Your personal equipment must be safe and functional and meet the respective technical standard. Every road cyclist is advised to inform themselves about the planned routes in specialist literature or on-site. Complete road cycling equipment is absolutely recommended even for experienced riders!
Tip: For the partly poorly lit tunnels, lighting is recommended.