The roadway width at all railroad crossings should be the same as the width of the approach roadway. ... Tables 3.5a (English) and 3.5b (metric) of the AASHTO Roadway Lighting Design Guide(7)provide recommended minimum levels andanbsp;...
|Title||:||A Policy on Geometric Design of Highways and Streets, 2011|
|Author||:||American Association of State Highway and Transportation Officials|
|Publisher||:||AASHTO - 2011|