Advance warning treatments let bicyclist path users know they are approaching an intersection with a roadway, another path, a railway, or other crossing. Since some bicyclists will be among the highest speed users of paths, sight and stopping distance, signs, and intersection design guidelines for bicyclists should be used in designing shared-use paths, including intersection approaches.¹ Passive warning devices including pavement markings, special pavement "alerts" such as textured treatments, and warning signs may be used. See the Manual of Uniform Traffic Control Devices (MUTCD) for signs that may be appropriate for warning of at grade crossings, including railroad crossings.⁴

A flat grade should be used on intersection approaches to improve sight distance and provide bicyclists with a chance to reduce speed. Bollards should be placed so bicyclists have adequate clearance and the placement does not force bicyclists into an incorrect position on approach to the intersection. Vegetation and other obstructions should be kept clear near intersections for adequate sight distance.

Roadway treatments such as warning signs and pavement markings also let road users know they are approaching an area where bicyclists, pedestrians, and other path users may be crossing or present.