Pursuant to M.S. § 169.2151, as it may be amended from time to time, the city is authorized to designate pedestrian safety crossings on exclusive city streets where pedestrian safety considerations require extra time for pedestrian crossing in addition to the time recommended under the Minnesota Manual on Uniform Traffic Control Devices for pedestrian signals. The city may provide for timing of pedestrian signals for such crossings, consistent with the recommendations of the uniform manual for pedestrian signal timing at senior citizen and disabled pedestrian crossings. The location of such crossings may be designated by resolution.