California Department of Transportation
 

Terminal Access Application Procedures

TRUCK CATEGORIES & ROUTES

For an overview of the two truck categories based on lengths (STAA and California Legal), and their allowed routes, see this Caltrans web page: Truck Lengths & Routes -- Quick Guide.


HOW TO OPEN A NEW STAA ROUTE -- STATE ROUTES

Caltrans classified all State routes in the 1980's with an engineering analysis. However, improvement projects may change the highway geometrics and may justify a new evaluation. To apply for a Terminal Access designation on a State route, you may send your request to the appropriate Caltrans District Truck Staff. You may also contact Caltrans Headquarters at (916) 654-5741.


HOW TO OPEN A NEW STAA ROUTE -- LOCAL ROUTES

Local governments may evaluate roads under their jurisdiction to consider allowing STAA trucks. Caltrans suggests that applicants and local governments follow the guidelines below.

GETTING THE PROCESS STARTED

Some local governments are not familiar with these procedures. Caltrans can provide guidance to local agencies re. route analysis and signage, if needed.

  1. Applicant sends a request to the local agency, and sends copies of that request to the Caltrans District Truck Staff and to other local agencies along the proposed route, if any. (There is no application form. A letter will suffice. Be sure that the letter includes all pertinent information, including the desired route, the highway exit, streets, and address of the terminal.)
  2. Local agency acknowledges receipt of the request and identifies the time frame for response. (Local agency and Caltrans must act on request within 90 days of receipt.)
  3. Local agency sends a copy of the request and an acknowledgement letter to the appropriate Caltrans District Truck Staff.

ANALYZING THE ROUTES

  1. Local agency and Caltrans analyze the affected highway segments, intersections and interchanges under their respective jurisdictions, to determine whether both facilities can safely accommodate STAA vehicles. The Caltrans Highway Design Manual, Topic 404 (6 Mb file), is recommended as a guide for analyzing for STAA access.
  2. If the proposed TA route passes through more than one local jurisdiction, each affected local agency analyzes their route segment.
  3. If one end of the proposed local route dead ends (does not connect with another TA route), then that end point must have an adequate turn-around area, and that area must be accessible to all STAA trucks 24 hours per day. If the new route dead ends at a private terminal, the terminal facility must provide the 24-hour turn-around area for all STAA trucks, and permission for access must be provided in writing to the agency that is approving the route, e.g. Caltrans or the local government.

IF EITHER THE LOCAL OR THE STATE ROUTE CANNOT ACCOMMODATE A STAA TRUCK

Access is denied. If State ramps cannot accommodate, Caltrans notifies the local agency by letter that access is denied. Local agency notifies the applicant by letter that access is denied and sends a copy of the letter to the Caltrans District Truck Staff. Caltrans may also notify the applicant that access is denied, if appropriate. The process ends here, unless an improvement project is initiated to correct the problem.

IF BOTH THE LOCAL AND THE STATE ROUTE CAN ACCOMMODATE A STAA TRUCK

  1. The local agency sends the Caltrans District Truck Staff a letter stating that "the local roads and intersections on the proposed local Terminal Access route meet all geometric criteria for STAA trucks" as required by the 2014 California Manual on Uniform Traffic Control Devices (CA MUTCD), Page 560 (6 Mb file). The "geometric criteria" are described in Topic 404 in the Caltrans Highway Design Manual (6 Mb file). The letter must be signed by a responsible authority representing the local jurisdiction.
  2. If the proposed TA route passes through more than one local jurisdiction, each affected local agency sends a letter to Caltrans as described in #1 above.
  3. The Caltrans district sends a copy of the letter(s) to Caltrans HQ Office of Traffic Engineering, Legal Truck Access Branch.
  4. The local agency notifies the applicant that access is granted and sends a copy of the letter to the Caltrans District Truck Staff.

POSTING SIGNS

If access is granted, the Caltrans Terminal Access signs (G66-56) must be installed:

  1. The local agency installs Terminal Access signs (G66-56) along local routes as trailblazers. At locations where the TA route ends (at the 24-hour turn around areas), a G66-56 sign must be installed with an "End" sign (M4-6).
  2. In addition to the required TA signs, the local agency is also encouraged to produce a map or a listing of local TA routes that can be posted on the local government website, and linked on the Caltrans website at: http://www.dot.ca.gov/hq/traffops/engineering/trucks/truckmap/local-truck-routes.htm.
  3. The local government notifies Caltrans that the local TA signs are installed.
  4. After the local TA signs are installed, Caltrans installs TA signs on the State route indicating the approved exits leading to the new local TA route. The signs should be posted as soon as possible; the timeline for posting signs on the State route can be discussed with the Caltrans District Truck Staff who will place the sign order with District Maintenance.


LEGAL BASIS

Reasonable Access: Code of Federal Regulations, Title 23, § 658.19 states, "Reasonable access. (a) No State may enact or enforce any law denying reasonable access to vehicles with dimensions authorized by the STAA between the NN and terminals and facilities for food, fuel, repairs, and rest. ... (h) States shall ensure compliance with the requirements of this section for roads under the jurisdiction of local units of government."

Process: Section 35401.5(d) of the California Vehicle Code (CVC) states, "The Department of Transportation or local authorities may establish a process whereby access to terminals or services may be applied for upon a route not previously established as an access route." The terminal is considered any place of business, provided that it is a legal operation."

Geometric Criteria: 2014 California Manual on Uniform Traffic Control Devices (CA MUTCD), Page 560 (6 Mb file) states: "2. On Local Routes: • Signing of egress from a State Terminal Access route to a local Terminal Access route shall be done by Caltrans, only if: a) The local agency has requested that Caltrans place the sign and, b) the local agency has informed Caltrans in writing that the local roads and intersections on the proposed local Terminal Access route meet all geometric criteria for STAA trucks and, c) where the proposed Terminal Access route passes through more than one local jurisdiction, each affected agency has informed Caltrans in writing that the local roads and intersections on the proposed local Terminal Access route meet all geometric criteria for STAA trucks and, d) Caltrans has verified that the State highway ramps or intersections meet all geometric criteria for STAA trucks."

Sign Installation: The sign installation is required by law. The 2014 California Manual on Uniform Traffic Control Devices (CA MUTCD), Page 560 (6 Mb file) under "2. On Local Routes" states:

  • ... the local agency or agencies shall place G66-56(CA) signs at every critical decision point on the Terminal Access route in their respective jurisdictions, including a G66-56(CA) sign with END Auxiliary (M4-6) sign at the 24-hour turn-around location where the Terminal Access route ends if it does not connect to another STAA route.
  • ... Caltrans shall place a G66-56(CA) sign on the State route in advance of the ramp or intersection to the local Terminal Access route.

Basis for Denial: A request for a terminal route can be denied; however, the CVC Section 35401.5(d) states, "The denial of a request for access to terminals and services shall be only on the basis of safety and an engineering analysis of the proposed access route."

Time Limit: The CVC Section 35401.5(d) states, "If a written request for access has been properly submitted and has not been acted upon within 90 days of receipt by the Department or the appropriate local agency, the access shall be deemed automatically approved." However, the meaning of the term "act" may be open to interpretation; it may not necessarily mean that the final decision must be made during that time frame.

Access for All: When an application is successful, the road is opened to all trucks of the same type as the applicant. CVC Section 35401.5(d) states, "...the route shall be deemed open for access by all other vehicles of the same type regardless of ownership."


ENGINEERING BASIS

Off-Tracking: Caltrans performs engineering analyses that focus on a vehicle characteristic called "off-tracking." Off-tracking is the tendency for rear tires to follow a shorter path than the front tires when turning. Off-tracking is the primary concern with longer vehicles because rear tires may clip street signs, drive onto unpaved shoulders, walkways, or bike lanes, or cross the centerline on a curve, creating a safety hazard for adjacent and oncoming traffic.

Design Criteria: The STAA design vehicle and guidance for its use are included in the Caltrans Highway Design Manual, Topic 404 (6 Mb file). The STAA design vehicle has a 48-foot semitrailer. (Trucks with 53-foot semitrailers are also considered STAA trucks; however, trucks with the 53-foot semis are not used as a design vehicle as they are not the worst case for off-tracking due to their shorter wheelbase.)

Templates: The Highway Design Manual has templates for design vehicles, including STAA vehicles. Designers can print the templates and scale them as needed.

Software: Caltrans uses "AutoTurn" software which simulates the turning movements of slow-moving vehicles. AutoTurn is compatible with MicroStation and AutoCADD. AutoTurn is available from Transoft Solutions at this website: www.transoftsolutions.com. Other truck-turning software programs include "AutoTrack" at Savoy Computing Services Ltd at this website: www.savoy.co.uk, and "PathPlanner" at Simtra Aero Tech at this website: www.simtra.com.


CONTACTS

Caltrans Legal Truck Size & Weight Work Group
Casey Robb
Manuel Fonseca
General number (916) 654-5741

E-mail: Legal Truck Access Branch.

Return to the Caltrans "Legal Truck Access Branch" page.

Revised 11/17/14.