Highway Superelevation

[CivilShepp]

Currently a College student in Ontario, Canada
Looking for some ideas for a technical project
My proposed topic is on superelevation
Any ideas for a scope of study would be greatly appreciated!
Thanks

 

[cvg]

how about drainage problems on super elevated freeways

 

[eea]

Sticking with the Super-elevation theme:

- Comparing the physics' equations against AASHTO or DOT / Ministry of Transportation guidelines would be a good start.

- Effects of loss of coefficient of friction, i.e. icing on the roadway and impacts on travel speed.

- Review of design vehicle (PV) used for standard guidelines compared to current vehicles, trend towards hybrids, other changing trends

- Tire contact area, smaller versus larger diameter tire, wider versus narrower tread

- Review guidelines for physical pavement transitions from normal crown to super elevation, 1/3 on 2/3 off, run-out lengths, ...

 

[BUGGAR]

How about reverse superelevation of train tracks to counteract the inward vector resulting from tractive forces on the couplers between rail cars?

 

[chicopee]

Taconic State Parkway in New York State has reverse super elevation and it is not a pleasant sensation when you are doing 70 mph and I am sure has been the cause of many accidents over the yearss.