Keyboard Shortcuts/transport

Key(s)	Function
[ r ]	Road tool
[ Alt ] + [ r ]	Street tool
[ Ctrl ] + [ r ]	Avenue tool
[ Shift ] + [ r ]	Elevated Highway tool
[ t ]	Rail tool
[ Shift ] + [ t ]	Subway Tool (takes you underground)
[ Ctrl ] + [ t ]	Elevated Rail Tool
[ Ctrl ] + [ Shift ] + [ r ]	Build Bus Stop
[ Ctrl ] + [ Shift ] + [ t ]	Bulid Passenger Train Station
[ Ctrl ] + [ Alt ] + [ t ]	Build Freight Train Station
[ Shift ] + [ Alt ] + [ t ]	Build Subway Station
[ Alt ] + [ t ]	Build El-Rail Station
[ m ]	Build Vehicle Ferry Terminal
[ Ctrl ] + [ m ]	Build Passenger Ferry Terminal

Holding shift down and then dragging (not dragging and pressing shift) allows a combination of diagonal and orthognal track to built in one go.