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Proposed DWI Law Reforms for Missouri: A Policy Brief

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Abstract

This paper presents a legislative proposal for reforming Missouri's driving while intoxicated (DWI) laws. Drawing on research linking blood alcohol content to traffic accident rates, the proposal recommends five key changes: lowering the BAC limit for adult drivers to 0.05%, establishing automatic license suspensions for repeat offenders over 21, banning open containers in vehicles, increasing fines and adding mandatory driver education for first offenders, and moving the mandatory ignition interlock device (IID) requirement to the second offense. Each recommendation is grounded in existing research and compared against current Missouri statute and national safety board guidance.

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What makes this paper effective

  • Each policy recommendation is immediately followed by a justification grounded in cited research, creating a clear claim-and-evidence structure throughout.
  • The proposal engages honestly with political feasibility, acknowledging that a zero BAC limit for adult drivers is unlikely to be accepted and selecting the 0.05% threshold on that basis.
  • The paper draws on both domestic safety data and international evidence (UK driver education programs) to support its recommendations, demonstrating awareness of comparative policy.

Key academic technique demonstrated

The paper consistently uses a two-step argumentative move: it states a proposed rule and then provides a rationale supported by peer-reviewed or official sources. This mirrors the structure of a real legislative brief and shows how policy writing differs from a standard argumentative essay — each claim must be both practical and evidence-backed.

Structure breakdown

The paper is organized as a numbered list of five distinct policy sections — BAC limits, abuse-and-lose rules, open container prohibition, first-offense punishments, and subsequent-offense punishments — followed by a Works Cited page. Each section functions as a mini-argument: rule statement, then justification. The introduction frames the proposal as a rewrite of existing Missouri law, and the conclusion of each section ties the recommendation back to safety outcomes or deterrence rationale.

DWI laws will always be contentious, with different viewpoints shaping their requirements. The following proposals represent recommended revisions to Missouri's DWI laws. The rationale for each recommendation is provided alongside the proposed rule.

Proposed rule: A person will be deemed intoxicated if their blood alcohol content (BAC) exceeds the permitted level. The permitted level for drivers of commercial vehicles will be 0%; for drivers aged 21 and under it will be 0.01%; and for drivers over the age of 21 it will be 0.05%. The proposal also covers intoxication or undue influence from any other substance that impairs judgment.

There is a clear relationship between higher blood alcohol content and higher rates of road traffic accidents (Karakus et al. 440; Fell and Voas 869). A zero BAC requirement for commercial vehicle drivers aligns with many current transportation company policies, so it is both safety-enhancing and unlikely to face significant resistance. The recommendation of 0.05% for drivers over 21 represents a reduction from existing levels, which should help lower the accident rate. While a zero limit would be the safest option, it is unlikely to be politically accepted; the 0.05% threshold has therefore been chosen, as it is the level endorsed by the National Transportation Safety Board (Fell and Voas 869). The existing lower limit for those aged 21 and under has been retained, as there is already a legal precedent for that distinction. The clause regarding other substances is included to address impairment beyond alcohol, consistent with provisions already present in current law.

Proposed rule: Drivers aged 21 and under will have their license suspended for 90 days following a first offense under the new DWI act, and for one year following a second offense. For drivers over the age of 21, a license will be automatically suspended for 90 days upon a second offense and for one year upon a third offense, unless extenuating circumstances apply. Anyone who refuses a blood alcohol test may have their license revoked for up to one year at the discretion of the court.

The current abuse-and-lose rules already provide for a 90-day suspension and a one-year revocation for drivers under 21 on a first and second offense respectively, so that provision is not new and should not be controversial. No equivalent automatic suspension currently exists for drivers over 21, which may be perceived as inequitable. This proposal introduces such a rule for that group. The presence of an automatic suspension may serve as a stronger deterrent against repeat offending.

Proposed rule: No driver should transport an open container of alcohol. An open container includes a glass or any other container not secured with a fastener.

This provision is intended to prevent drivers from consuming alcohol while operating a vehicle, and to reduce the risk that open containers carried by passengers could influence the driver's behavior or access to alcohol while driving.

Proposed rule: Punishments for a first offense will include a maximum fine of up to $1,000, a maximum jail term of six months, and license suspension in accordance with the provisions in the abuse-and-lose section above. Drivers who avoid a jail sentence should be required to complete a driver education course at their own expense as a deterrent against future drinking and driving.

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Key Concepts in This Paper
BAC Limit DWI Reform License Suspension Ignition Interlock Device Open Container Driver Education Traffic Safety Repeat Offenders Deterrence Policy Missouri Law
Cite This Paper
PaperDue. (2026). Proposed DWI Law Reforms for Missouri: A Policy Brief. PaperDue. https://www.paperdue.com/study-guide/proposed-dwi-law-reforms-missouri-2167601

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