Quote:
Originally Posted by polak
110 the design limit of Stoney SE?!?
BS. That road could have 140 and still be as safe as can be.
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Probably. The highest allowed for by the current standards is a design limit of 130, posted as 120, and Stoney SE does not meet the requirements because it is not 8 lanes wide for its entirety so the limit would have to be variable. I am just the messenger.
Quote:
It is desirable that the design speed
exceed the normal speed limit by a margin of at least
10 km/h. For example, because the normal speed
limit on two-lane highways will be 100 km/h when
paved, the appropriate design speed is 110 km/h.
On rural expressways, the normal speed limit is 110
km/h and it is conceivable that the normal speed
limit may be increased further at the time of freeway
completion. Consequently, a design speed of 130
km/h is considered appropriate for future freeway
facilities. The 130 km/h design speed should also be
used on undivided highways if they form part of a
future freeway.
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http://www.transportation.alberta.ca...ion/chap-a.pdf