I .
Advanced Stop Bars
Typically installed at busy intersections , advance stop bars allow for safe movement of bicyclists through an intersection . They are normally located several feet ahead of the motor vehicle stop bar to allow visibility by motorists . The advance stop bar also allows bicyclists to cross the street at a faster pace when the traffic signal changes to green ( Figure 7.52.21 ).
J . Bicycle Facilities at Railroad Crossings
Railroad crossings are often hazardous to wheeled devises such as bicyclists and wheelchairs . Railroad crossings have flangeway gaps that allow passage of the train , but also have the potential to catch bicycle and wheelchair tires . In addition to the fixed rails and ties , other loose material can often create tripping hazards .
Where possible , bicycle crossings at railroads should be minimized and the crossing location should have a direct and clear view of oncoming trains and bicyclists . Warning signs and pavement markings must be installed in accordance with MUTCD standards .
Figure 7.52.21 . Example of advanced stop bars .
Design Criteria :
• Filler should be made of compressible material to enhance bike operation and prevent pedestrian hazards ( Figure 7.52.22 ).
• At the crossing of the train tracks , install a rubber surface that will not buckle , expand , or contract around railroad flangeways to reduce changes in grade and maintenance problems ( Figure 7.52.23 ).
Design Criteria :
• The advanced stop bar should be placed 4 feet in advance of any marked crosswalks .
• The stop bar should be painted white and is 24 inches wide .
• The stop bar should be located at signalized intersections and at multi-way stops .
• See Arlington Design Manual Criteria and MUTCD for additional information regarding Advance Stop Bar requirement .
Figure 7.52.22 . The flangeway filler eliminates the gap between the rail and pavement surface . It helps to provide a safe path of travel for pedestrians and bicyclists crossing the railroad tracks . The filler consists of a rubber insert that deflects downward with the weight of a train and does not affect railway function .
Chapter 7 : Design Guidelines | 7-41