A limited-access highway is a highway where access is limited. Much of the time, driveways to adjacent private land can be eliminated with a side road for access. Much of the time, the terms freeway and expressway will apply to these corridors depending on vincinity's nomenclature. On some occasions, driveways may be connected to these corridors. Sometimes, at-grade intersections can be found too. High-capacity freeway interchange in Los Angeles, California. ... An expressway is a divided highway, usually 4 lanes or wider in size, where direct access to adjacent properties has been eliminated. ... At-grade intersection on Interstate 40 west of Albuquerque, New Mexico Freeways, as limited access highways, normally have grade-separated interchanges. ...

Here is a diagram of a LAH:

 P=private access ^ or v=ramp access +=at-grade crossing 

 P P P P P P P P ----------+--------------frontage road--------+-- | ^ ----------+-----------------------------------|----- ----------+-----------------------------------|----- | | ----------+-----------------------------------|----- ----------+-----------------------------------|----- | P P v 

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History

The concept of (deliberately) limited-access highways started back during the parkway system in the state of New York back in c. 1910. They eliminated private access on parkways because if there was, delivery trucks would be unable to send goods to those places hence the concept. After a while, the concept of LAH's evolved into the so-called "uninterrupted highways" which are commonly known as freeways, but can be called expressways according to the vincinity's nomenclature. A parkway is a general designation of a type of limited-access highway in the US and Canada. ... State nickname: Empire State Other U.S. States Capital Albany Largest city New York City Governor George Pataki (R) Official languages None (English is de facto) Area 141,205 km² (27th)  - Land 122,409 km²  - Water 18,795 km² (13. ... 1910 was a common year starting on Saturday (see link for calendar). ... Freeways may refer to: the plural of freeway the 1977 Freeways album by Bachman-Turner Overdrive This is a disambiguation page — a navigational aid which lists other pages that might otherwise share the same title. ... An expressway is a divided highway, usually 4 lanes or wider in size, where direct access to adjacent properties has been eliminated. ...

See also

• Controlled-access highway
• Super-2
• RIRO Expressway