On 12/08/2010 05:10 PM, Kenneth Pardue wrote: > Yes, in this case there is a physical barrier. On a semi-related note, on > another part of town there is a 4 lane highway. Parts of the highway are > separated by a median, and other parts bring both eastbound and westbound > lanes together, with a turning lane separating them. That seems even more > valid than the residential roads to split into two separate ways, but there > isn't technically a barrier separating the lanes. Make it two ways or merge > into one where there is no physical barrier? I'm thinking the former.
In the US, a center lane bordered by double-yellow lines on both sides is the same as a median and can't be legally crossed or used as a turn lane (as opposed to bordered by a solid yellow line with broken yellow on the inside, aka a bidirectional turn lane; solid yellow line with broken yellow on the outside, ie a bidirectional passing lane (aka suicide lane); or double-broken-yellow as found on lanes that change directions based on time of day or signals). If it's an open median (ie, double-solid yellow lines on both sides), then I'd mark it as two separate roadways, since that's what it functionally is; otherwise, one roadway.
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