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Speed Limits

La. R.S. 32:61 — 55 miles per hour on a highway unless posted, 70 on an interstate

RoadMaximum
RoadAny highway, unless a lower limit is postedMaximum55 miles per hour
RoadMulti-lane divided highway with partial or no access controlMaximum65 miles per hour
RoadInterstate or controlled access highwayMaximum70 miles per hour
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No one may drive faster than is reasonable and prudent for the traffic, the road surface and width, and the weather, and never faster than the maximum. The transportation department may raise a limit in a speed zone it posts after an engineering study.

Driving so slowly as to impede the normal and reasonable movement of traffic is also a violation, unless a special hazard calls for it. Each violation of either rule adds a $5 fine on top of the other penalties.

Sources for this section (2)
  1. La. R.S. 32:61 — Maximum speed limit
  2. La. R.S. 32:64 — General speed law

Legal information, not legal advice. Verified as of October 2026. Applying it to a particular situation is the work of a licensed Louisiana attorney.

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