Thursday, October 25, 2007

Road-Rail Vehicles
















































A Road-rail vehicle is a self-propelled vehicle that can be legally used on both roads and rails. They are sometimes referred to as a Hy-rail or HiRail. They are normally converted rubber-tired road vehicles that have additional steel wheels for running on rails. Because only one set of wheels would logically be used at a time, a pneumatic, or hydraulic system is employed to lower and raise the rail wheels.

Such vehicles are normally used for permanent way maintenance during engineering possessions of the line. They can be driven on roads to near the site and then convert to rail vehicle for the final journey to the worksite. This avoids both the complex manoeuvres that would be associated with a rail vehicle, and the problem with a road vehicle of accessing the worksite if the worksite is not near a road. Since they are normally converted road vehicles, they would not fare well in a collision with a heavy rolling stock and therefore can only drive on railways under an engineering possession. Their light weight also means they may not correctly operate track circuits for signaling.
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9 comments :

Anonymous said...

Wow, I love the one where the family is on the bike type train thingy. "Now Jimmy, when we go over the bridge down lean to far over the side." That kid could so jump out.

Hideki-chan said...

The police car ones make no sense.

Anonymous said...

"The police car ones make no sense."

Shit, and the rest of the cars on railroad tracks do?

SexyMonica said...

Ya i do agree with Anonymous but anyways love the post like always ;)

Anonymous said...

It isn't used as a police car any longer....converted to rail check vehicle. The benefit is the siren & lights. Thay are a safety feature to alert other vehicles at rail road crossings.

Anonymous said...

How do I get some of those wheels on my Impreza?

Anonymous said...

is a big love!
you have also a so rare picture.
my comlpiments!

Gunner said...

Bulls RR Police will hirail tracks where there is no other access and/or where there are numerous fatalities and other such incidents. I work for the RR, but as a kid I was caught on the right of way near the Boy Scout Camp I was at. It was a common occurrence.

cyclosystem said...

wow! great collection of pictures.. i love it

Railway Vehicles