define standards for this kind of access highways?
Controlled access roads, few exceptions, traffic lights are limited to toll booths and ramp meters, metered flow control for lane merging during rush hour.
Interstate Highway System
The American Association of State Highway and Transportation Officials (AASHTO) has defined a set of standards that all new Interstates must meet unless a waiver from the Federal Highway Administration (FHWA) is obtained. One almost absolute standard is the controlled access nature of the roads. With few exceptions, traffic lights (and cross traffic in general) are limited to toll booths and ramp meters (metered flow control for lane merging during rush hour).
how far is carlisle pennsylvania from my location UNANSWERABLE what is the main topic about? The Pennsylvania Turnpike is an east–west toll highway. which route does it connect to? Begins at the Ohio state and ends at the New Jersey. does the first place mentioned experience any seismic activities? It has registered more than 200 earthquakes with a magnitude of 2.0 or higher have occurred since 1776. what are the people native to this place? Many of these Ohio-country nations were multi-ethnic  and sometimes multi-linguistic. when was the aforementioned toll highway commissioned? During the 1930s. and was there a reason for it being different? It was one of the earlier long-distance limited-access highways in the United States, and served as a precedent for additional limited-access toll roads and the Interstate Highway System. describe the system mentioned above? It is a network of controlled-access highways that forms part of the National Highway System in the United States.
wiki:11578598
Interstate Highway System [SEP] Standards
The American Association of State Highway and Transportation Officials (AASHTO) has defined a set of standards that all new Interstates must meet unless a waiver from the Federal Highway Administration (FHWA) is obtained. One almost absolute standard is the controlled access nature of the roads. With few exceptions, traffic lights (and cross traffic in general) are limited to toll booths and ramp meters (metered flow control for lane merging during rush hour).