South Dakota Truck Lane Restrictions

Which lanes a truck can use in South Dakota

South Dakota keeps no truck out of the left lane by weight or class. You follow the general rule: drive on the right half, and if you are moving slow, hug the right edge and let faster traffic by (SDCL 32-26-1). It applies to every vehicle. The violation is a Class 2 misdemeanor, so the ceiling is steep, up to $500, but a routine ticket runs far less. Use the left lane to pass, then get back over.

Roads, exceptions, and signs

• Where it applies: All highways of sufficient width statewide. No truck-only corridor and no metro truck-lane routing. I-90 and I-29 carry no left-lane truck ban.
• General rule: SDCL 32-26-1 - use the right half of the highway; drive a slow-moving vehicle as close as possible to the right-hand edge or curb except when overtaking and passing.
• South Dakota codes most rules-of-the-road violations as Class 2 misdemeanors, which is why the statutory max is high ($500) even though the rule itself is a routine keep-right. Not a truck ban.

What a lane violation costs

Violation of SDCL 32-26-1 is a Class 2 misdemeanor. The statutory ceiling is up to 30 days in jail and/or up to $500, though a routine ticket is handled well below that. Treat the $500 figure as the max, not the typical payable amount.

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