Role/jurisdiction: Unincorporated county roads only — the county does not review or permit work inside Tampa, Plant City, or Temple Terrace. Heavy development review volume; land development review runs through Development Services (electronic submittal via HillsGovHub), roadway operations through Public Works.
Known starting points (resolved 2026-07-07 unless tagged):
- Vision Zero: the adopted Vision Zero Action Plan is the Hillsborough TPO’s, not the county’s — see Plan Hillsborough Vision Zero. The county’s implementation arm is Safe Travels Hillsborough and its Mobility Safety Programs (pedestrian safety, Safe Routes to Schools, corridor safety on the High Injury Network).
- Traffic calming: long-running Residential Traffic Calming program confirmed — handbook, criteria, and petition process linked below.
- GIS: the current portal is the county GeoHub (ArcGIS Hub), not the old “County Center” portal.
- Always confirm FDOT vs. County maintenance for a corridor before citing standards — many arterials here are state roads (FDOT District 7)
#status/verifyper corridor.
Collect (link each as found; date it)
- TIA/TIS guidelines: Transportation Technical Manuals — Transportation Technical Manual (TTM) for Subdivisions & Site Development Projects, October 2023 edition (applies to submittals on/after 2023-11-01; 2021 and 2017 archived on same page). This is the governing document for transportation plans and analysis on private development. Supplemented by TTM Technical Bulletins. Note: transportation concurrency replaced by Mobility Fees. (checked 2026-07-07)
- Parking study guidelines / parking code (with section #): LDC Part 6.05.00 — Parking and Loading (Municode); rates and design standards in § 6.05.02. No standalone county parking study guideline is published online — reduction/alternative-rate study expectations: request from Development Services. (checked 2026-07-07)
- Traffic calming program/guidelines: Residential Traffic Calming Handbook (PDF) — Public Works, Traffic Services Division; latest revision 2006-06-07 (still the posted version on Public Works Publications). Key mechanics: local streets only (collectors by exception); 5 property-owner signatures to initiate; Class I = 85th percentile < 12 mph over posted (enforcement/education only); Class II = 85th percentile ≥ 12 mph over posted (min 37 mph) or hourly volume > 12% of ADT / > 10 daily trips per household; Hearing Master public hearing → petition canvass of 90% of owners with 60% support (speed devices) / 75% (volume devices) → BOCC consent agenda. Devices: speed humps, narrowed humps, chicanes, roundabouts, narrowing/throating, turn restrictions, diverters, median mods. (checked 2026-07-07)
- Complete Streets policy · Vision Zero / Safety Action Plan: no standalone county-adopted Complete Streets policy or county Safety Action Plan found published online
#status/verify— request from the county. Working substitutes: TPO Vision Zero Action Plan + Speed Management Plan (multijurisdictional, covers unincorporated county) and the county’s Safe Travels / Mobility Safety Programs pages. (checked 2026-07-07) - Roadway design standards / standard details: Hillsborough County Transportation Design Manual, 2023 (CIP projects; includes typical sections, standard details, plan-sheet templates) and the TTM (private development). Related bulletins: Design Manual Technical Bulletins. (checked 2026-07-07)
- Access management standards: LDC Part 6.04.00 — Access Management (Municode) — connection permits required for all new driveways to the unincorporated public street system; general access standards in § 6.04.03. Design specifics also in the TTM. (checked 2026-07-07)
- Traffic count requirements (seasonal factors accepted?): count/analysis requirements live in the TTM (Oct 2023) — confirm seasonal-adjustment acceptance against the current TTM text before relying on it
#status/verify. The county does not publish a public traffic count database (GeoHub searched 2026-07-07, none found) — request counts from Public Works; FDOT Traffic Online covers state roads. - Crash/safety dashboard: not published by the county itself — no county crash dashboard found online; request data from the county, or use TPO Vision Zero materials at planhillsborough.org/vision-zero (Signal Four Analytics requires agency login). (checked 2026-07-07)
- GIS / open data portal: GeoHub landing page → direct portal: Hillsborough County GeoHub (ArcGIS Hub) — boundaries, zoning, roads/sidewalks, CIP projects, evacuation routes, historical aerials. (checked 2026-07-07)
- Signal timing procedures & maintaining agency: county-operated signals are run by Public Works Traffic Management through a central ATMS and Traffic Management Center (CCTV monitoring, retiming, smart intersections) — Traffic Management & CCTV. A written signal-timing procedures document is not published online — request from Public Works. (checked 2026-07-07)
- Development review process & submittal requirements: Development Review Procedures Manual (procedures referenced by the LDC) · Site & Subdivision review — electronic submittal via HillsGovHub; free pre-submittal conference available and recommended. (checked 2026-07-07)
- Permit forms (ROW, driveway): Apply for a Right of Way (ROW) Management Permit — two types: Driveway Access (site access/driveway connections) and ROW Use, Other Uses; apply through HillsGovHub; unincorporated county only. (checked 2026-07-07)
- Example projects (ours & public): ours live in the private vault (see callout below); no county-published example TIA/TIS submittals found online.
Contacts, review-comment history, and institutional notes live in the private vault — never on the public site.
See also: MOC - Agencies · Hillsborough TPO · City of Tampa