Amends the Illinois Vehicle Code. Provides that the authority having maintenance jurisdiction over publicly owned paved bicycle trails in the State shall erect permanent regulatory or warning signage alerting pedestrians or cyclists of highway crossings, unless the intersection where the trail crosses the highway is controlled by an official traffic control device or sign. Provides that if the authority having maintenance jurisdiction over publicly owned bicycle trails has actual knowledge of an emergency or safety hazard that creates a dangerous condition on a publicly owned paved bicycle trail, the authority shall take reasonable steps to erect temporary signage or other warning markers, including, but not limited to, cones, barricades, or drums, alerting pedestrians or cyclists of the dangerous condition. Makes other changes. Effective immediately.