Re: [carfree_cities] Carfree concept mapping with Google Earth
- Matt Hohmeister wrote:
> <snip>Obviously clearances vary depending on width and length of rolling stock and
> - To cut-and-cover a heavy-rail, two-track metro on an existing
> street, how much width is required for the tracks?
whether there are masts for overhead electrification. Here in the UK, the
usual minimum width of straight, double-track, standard-gauge lines in
tunnels and between overbridge abutments and viaduct parapets is 26' (8m).
I'd say 26-30' (8-9m) minimum.
> How much width and length do we need for a station?By convention, the length of a station is a bit more than the length of the
longest train that stops there. Sorry for not being more specific! :-)
Width depends on how many passengers use the station, but minimum of 8'
(2.5m) for side platforms, more for island platforms.
> What is the minimum turn radius for heavy-rail metro?The traditional unit of length for UK railways (and roads) is the chain (22
yards or 66 feet). This is a very useful length because one chain is almost
exactly 20 metres.
Usual minimum radii for heavy rail in the UK are 7.5-10 chains (495-660' /
> Same thing for on-street light rail. Track width?A single-track, standard-gauge light rail line fits comfortably in a 12'
(3.65m) traffic lane.
> Track plus platform width?See above.
> Turn radius?For standard-gauge LRT lines, 25m (80') minimum, but can be as low as 15m
(50'). More width is needed on sharp curves than on tangent track.
- I have been looking at a satellite image of the area around an
apartment I used to live in, and I've made some comments about how I
feel the area could be converted to carfree. Comments welcome/encouraged!