CEMP-ET
TI 804-01
1 July 1908
(m) Depending upon the size of the project, marginal or medial channelization.
(n) Adequate road width and length at entrances to channel vehicles smoothly
into the proper lanes.
(o) Provisions for special use vehicles that require nonstandard turning radii and
driveway widths.
(2) Driveways. Driveways provide access to the site to suit specialized needs.
Driveway location, design, width, turning radii, terminus, etc., is dependent upon the proposed
use and the required site distance. Figure 4-6 illustrates a typical plan for access driveway
and vehicular circulation. Access drives should be designed to meet the following criteria:
(a) Take vehicles to their destination and return with minimum interference or
travel through parking areas, service areas or emergency zones.
(b) Enter and exit the site at the same point or on the same access road to
discourage through traffic on site.
(c) Accommodate two-way traffic since one-way systems can create confusion.
(d) Provide separation of service drives from emergency drives.
(3) Drop-off Areas. Drop-off areas should be provided for office, commercial,
educational and community facilities with high use. Drop-off areas should be:
(a) Located at or near the front of the building apart from entries into parking lots.
(b) Designated to provide a separate drop-off area located away from the
building for buses and shuttles.
(c) Preferably on a one-way loop to avoid confusion.
(d) Sufficient in size to avoid vehicle conflicts and stoppages of traffic flow.
Where a circular turn-around is used, the circle radius should be sized to support the design
vehicle.
b. Parking. Parking should occur in lots or structures with a limited number of entrances
and exits onto the access road or drive. Entrances and exits into different lots on the same
site should be aligned or adequately separated to provide safe sight and maneuvering
distances. Parking areas should provide:
(1) Barrier-free parking and pedestrian access must be provided to meet requirements
of the Americans with Disabilities Act, Accessibility Guidelines for Buildings and Facilities.
(2) Locate parking within convenient walking distance of a building entrance.
(3) Parking for high turn-over or short-term use (e.g., visitor, outpatient or delivery)
should be located in a separate lot or signed and placed nearest the entrance.
4-4
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