Oregon Doubles and Triples Test

Start by downloading the official Oregon CDL manual from the Oregon DMV website. Focus on Chapter 6 (Combination Vehicles) and the special section on doubles and triples. Highlight Oregon's unique rules, such as the 105-foot maximum length and the requirement for a separate T endorsement.

Visit your local Oregon DMV office (e.g., 1905 Lana Ave NE, Salem, OR 97314) to get a printed copy of the manual and ask about any recent regulation updates. Practice with our test multiple times, timing yourself to simulate the 25-minute limit. Pay extra attention to air brake pre-trip inspections—Oregon examiners often emphasize those.

Finally, drive or ride along on Oregon highways like I-5 near the Siskiyou Summit or I-84 through the Gorge to visualize real-world challenges. Combine our practice test with the DMV’s official practice tests for best results.

Oregon DMV
Main Office: 1905 Lana Ave NE, Salem, OR 97314
Phone: (503) 945-5000
Website: www.oregon.gov/odot/dmv

CDL Doubles/Triples Endowment Fees: The T endorsement costs $10 (plus base CDL fees). You must hold a valid Class A CDL and pass a knowledge test. No skills test is required for the T endorsement alone, but you must present it with your Class A license.

Requirements: You must be at least 18 years old for intrastate operation (21 for interstate), provide proof of identity, pass a vision test, and have no disqualifying traffic violations. Oregon requires a self-certification of medical status. Bring your current CDL and fee to any DMV office—walk-in appointments are available in Portland, Salem, Eugene, and other cities.