Unfamiliar with the term "crawler" lane. However it seems to refer to either the "slow" lane which (in the US) would be the travelled lane farthest to the right, or perhaps it referring to the "breakdown" lane which is usually a reference to shoulder (non-travelled) portion of the roadway.
passing and making left turns
It's from the German Autobahn. Auto - Car (Motor), Bahn - Lane (By way).
red
keep in the left hand lane
Usually for slower vehicles.
Generally speaking....NO it can't
A 2+ lane on a motorway is usually an HOV, or High Occupancy Vehicle, lane. Permission to drive in that lane is granted only when there are 2 or more persons in the automobile. There may also be time and day restrictions - the signage should state the limitations, but you need to consult applicable law in order to determine allowable usage outside of those times and days.
A crawler lane is typically found on highways or steep road grades where heavy vehicles, such as trucks, may struggle to maintain speed. These lanes provide additional space for slower-moving vehicles to ascend hills without impeding faster traffic. Crawler lanes are usually located on the right side of the highway and help improve overall traffic flow and safety.
No. The clockwise route will be about half a mile longer.
What colour are the reflectives studs between the hard shoulder and tye left hand lane of a motorway
google.com
They are white. The reflective studs are there for extra safety or when lighting is not available. The studs on the left of the inside lane are reflective green for exiting the motorway at the proper exits on the left-hand side. The red reflective studs are there to warn against exiting at that point, this is because that point is in fact a lane that is joining the motorway.