PC* Miler Road Classifications

The primary function of these roads is to move high volumes of vehicular traffic over medium to long distances at high speeds

Can be accessed only via access ramps

Major arteries that move heavy volumes of traffic at moderate speeds

Can be limited access in some areas but may also offer access from local roads

Usually have a barrier or median that prevents movement between lanes of opposing traffic

Medians may have crossovers that are part of the normal traffic pattern

Left turns are often restricted, both off of the highway and onto the highway

Usually multi-lane

Many but not all U.S. highways are in this class

Move significant volumes of traffic at moderate speeds

Most state roads fall into this class

These roads move moderate volumes of traffic over short to moderate distances

Carry vehicles from local roads to higher class roads

Function is to provide access to homes and properties

A connecting road leading on or off of a main road or highway

Sub-local roads, which include alleys, driveways, parking lots, and service roads. (Available in Version 34 and Higher)

Ferry routes (boarding/exit time not included)

Roads that lead in or out of well sites and other facilities