Add 5, 10, 15 to imperial maxspeed values
Add 5, 10, 15 to imperial maxspeed values

morray/iD,bagage/iD,openstreetmap/iD,edpop/iD,mapmeld/iD,1ec5/iD,bagage/iD,digidem/iD,mapmeld/iD,ngageoint/hootenanny-ui,mapmeld/iD,edpop/iD,1ec5/iD,ngageoint/hootenanny-ui,kartta-labs/iD,AndreasHae/iD,kartta-labs/iD,AndreasHae/iD,morray/iD,1ec5/iD,AndreasHae/iD,openstreetmap/iD,kartta-labs/iD,edpop/iD,openstreetmap/iD,digidem/iD,ngageoint/hootenanny-ui,bagage/iD