Site Directory
Browse the Research Library
Use this directory when you want the fastest route to a topic. The menu above now points here, and this page connects each hub to the most useful live reports.
Traffic Violation Defenses
Start here for legal questions about DUI, insurance, bicycle laws, and other traffic citations.
Vehicle Compliance
Use this hub for state vehicle code questions about emissions, insurance, and equipment requirements.
Vehicle Maintenance
Use this hub for troubleshooting noise, vibration, fluid leaks, battery issues, and other maintenance questions.
Commuter Rights
Use this section for questions about rentals, licensing ripple effects, and related commuter constraints.
Safety Data & Statistics
Use this section for NHTSA FARS and Census-backed crash statistics, including the year and state reports.
Category
Traffic Violation Defenses
5 reports
Can You Get a DUI from Video?
Research on how dashcam, body camera, CCTV, and citizen footage is used to charge and convict drivers for DUI — including delayed and after-the-fact cases without a breathalyzer.
Can You Get a DUI in a Parked Car?
Research-backed analysis of "Actual Physical Control" law — how most U.S. states allow DUI charges without the vehicle in motion, state rules, and defense options.
Can You Get a DUI as a Passenger?
A source-cited guide to when a passenger can face DUI through actual physical control, steering interference, DUI by consent, impaired supervision, and seat-switching evidence.
Can You Get a DUI on a Bike? All 50 States Explained
A state-by-state analysis of bicycle DUI laws, e-bike rules, and the statutes that determine when impairment charges apply.
Is It Illegal to Be on Your Phone at a Red Light?
A source-cited legal explainer for one of the most common distracted-driving edge cases.
Category
Vehicle Compliance
3 reports
Can You Pass Emissions With a Check Engine Light On?
An in-depth statutory and technical guide to state emissions testing, OBD-II readiness monitors, permanent DTCs, and waiver rules.
Is It Illegal to Drive Without Insurance?
A state-by-state statutory analysis of mandatory insurance laws, penalties, and source citations.
Is it illegal to drive barefoot in Pennsylvania?
A fact-checked analysis of PA Title 75 regarding footwear requirements and liability implications.
Category
Vehicle Maintenance
5 reports
How Often Should You Rotate Your Car Tires?
A comprehensive, research-backed guide to tire rotation intervals, patterns, and safety considerations based on drivetrain configuration.
Why Is My Steering Wheel Tilted?
An in-depth technical analysis of why a steering wheel sits crooked while driving straight, covering alignment, EPS drift, and steering system components.
Why Would My Transmission Fluid Be Leaking?
A practical diagnostic guide to pan gaskets, cooler lines, axle seals, front pump seals, vents, connector sleeves, and case defects.
Why Is My Car Shaking When I Drive? (Diagnostic Guide)
An authoritative breakdown of the 8 most common vibration scenarios, cited to NHTSA, AAA, and ASE engineering standards.
How Often Do You Need a New Car Battery?
A technical replacement guide built around battery age, testing, climate, and failure symptoms.
Category
Commuter Rights
1 report
Category
Safety Data & Statistics
3 reports
Car Fatality Statistics & Facts
A hub page that connects the fatal crash year trend and state explorer, with draft statistic slots for future headlines.
Fatal Car Accidents by State (2024)
An interactive NHTSA map and ranked table built from the 2024 FARS National CSV.
Fatal Car Accidents by Year (1975-2024)
Historical NHTSA FARS fatal crash totals and population-adjusted fatality rates from 1975 through 2024.