HB 644 Maryland House of Delegates · 2025 Regular Session

Vehicle Laws - Speed Monitoring Systems - Residential Districts

HB 644 expands the statewide application of speed monitoring systems in residential districts, requiring all such systems to comply with existing rules previously limited to specific counties. It mandates that speed limit signs in residential areas include specific signage indicating the presence of speed monitoring systems and requires local jurisdictions to provide public notice through websites and newspapers before activation. The bill also specifies that real-time speed displays must be visible at certain locations, including highways in residential zones with 35 mph limits, to inform drivers of speed monitoring activity. These changes standardize requirements across Maryland while maintaining the existing definition of "residential district" and procedural safeguards.

Issues: ✓ Transportation

Bill status passed 3 of 5 stages cleared

Introduction

Jan 2025

Committee Review

Mar 2025

House of Delegates Passage

Mar 2025

Senate Passage

Governor

Introduced Jan 23, 2025 Last action Mar 17, 2025

Maddy AI version diff · 1 comparison

What changed between versions

First - Vehicle Laws - Speed Monitoring Systems - Residential Districts → Third - Vehicle Laws - Speed Monitoring Systems - Residential Districts · 6 edits

MODERATE

This bill expands the use of speed monitoring systems statewide in residential districts, replacing previous county-specific limitations. It also adds new sponsors and updates procedural information, while maintaining core definitions and requirements for system placement and signage.

Scope change

The bill's scope changed from applying only to specific counties and locations to applying statewide in residential districts, significantly expanding where speed monitoring systems can be deployed.

SCOPE

Added new sponsors (Healey, R. Lewis, T. Morgan, and Ruth) to the bill's authorship list.

Changed bill status from first reading to include committee report (favorable with amendments), House action (adopted), and second reading date.

Expanded applicability from specific counties (Anne Arundel, Montgomery, Prince George's, Baltimore City, Talbot) to statewide residential districts.

DEFINITION

Reorganized the definition of 'residential district' to clarify it must not be a business district and must adjoin a highway with primarily residential or mixed-use property.

REQUIREMENT

Reformatted requirements for speed monitoring system placement and signage to apply statewide rather than to specific locations.

TECHNICAL

Added formatting notes indicating underlining shows amendments and strike-through shows deletions.

Floor votes · House of Delegates Mar 7, 2025

How they voted

100–35

Passed · 4 other

Total votes 139

Mar 7, 2025

D Democratic100

95 Yea 2 Nay 3

95% Yea

R Republican39

5 Yea 33 Nay 1

84% Nay

Vote distribution

All Yea All Nay Mixed No data

Full legislative history

Actions timeline

Total actions

Key actions

Committee

Mar 17, 2025

Committee

Referred Judicial Proceedings

upper

Mar 17, 2025

Lower · Passed

Third Reading Passed

lower

Mar 14, 2025

Lower · Passed

Favorable with Amendments {

lower

Mar 14, 2025

Lower · Passed

Favorable with Amendments Report by Environment and Transportation

lower

Mar 7, 2025

House Of Delegates · Passed

House of Delegates Vote: pass (100-35-4)

house of delegates

Jan 23, 2025

Committee

First Reading Environment and Transportation

lower

11 primary · 0 co-sponsors