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Ontario G1 Practice Test
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Passing target: 16 correct signs and 16 correct rules (TLA practice targets)
Vehicle safety, insurance, registration and towingStandalone practice
Why should a trailer have safety chains or cables in addition to the ball and hitch?
A blue tow car and a white trailer are aligned with a connected primary drawbar and hitch. No breakaway event or safety-chain highlight is shown.
Correct answer: They hold the trailer if the hitch comes apart
Why
Safety chains or cables are a backup connection. They must be strong enough to hold the trailer and load if the primary hitch fails.
Verified against The Official Ministry of Transportation (MTO) Driver’s Handbook · Vehicle condition, insurance, registration and towing · p. 166
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