819.1 Context & place

Blend retail, residential, and civic flows. Start with VDA + people flow (221, 231).

Begin by mapping how people and vehicles actually move. Use a short VDA alongside people-flow & egress width checks to place protection where it works with everyday life. In mixed-use streets, the dominant risks and the busiest hours change by day and season; design for these cycles rather than a single static layout.

Translate those flows into defend lines and sidewalk clearances. Tie your arrays & spacing to the run-up distance that actually exists on-street (not the theoretical maximum). Keep the design legible: consistent rhythm, clear pedestrian paths, and obvious gateways for legitimate vehicles.

819.2 Street typologies

Shared-space, woonerf, and transit streets. Pick HVM bollard patterns per 321–324.

Typology drives array choice. In shared-space and woonerf streets, staggered array patterns often blend best with paving modules and shopfront cadence. Transit-priority corridors may need linear gateways at intersections with protected turning pockets. At corners and islands, use corner, island & pinch-point treatments to block glancing approaches without creating handlebar traps.

Match the effective height and head type to the context: dome/chamfered heads reduce snag risk; illuminated heads can boost conspicuity near crossings. Where storefront security is the dominant purpose, reference public safety and frontage protection guidance.

819.3 Access windows & policies

Timed deliveries with removable units (325, 326). Crash rated bollard lanes protect residents.

Define delivery “access windows” by hour and vehicle class, then implement gateways that can open quickly and safely. For simple schedules, turning & service access can use removable (lift-out) posts; for higher throughput, define a bi-directional lane set with automatic lanes and clear signage & markings.

State the modes of operation (normal, event, emergency), alarm philosophy, and fallback rules. In UAE contexts, capture these policies in the Operational Requirements Document and reference SIRA expectations early so authority approvals align with the street’s trading hours and resident access needs.

819.4 Micro-mobility & cyclists

Gaps and head shapes that avoid snagging (232, 312). Markings guide routes (357).

Set clear-gap to pass wheelchairs, prams, and scooters while resisting hostile vehicles. Check height and head geometry to reduce handlebar-trap risk at desire-line crossings. Use subtle ground markings and beacons to guide cyclists to the intended passages, separating them from stewarded vehicle gates.

Where arrays cross designated cycle routes, add a “refuge pocket” before the gate with a shallow chicane and high-contrast bands per signage & markings. Confirm sightlines and stopping distance before any rising equipment is placed near a bend.

819.5 Frontage/door clusters

Near-door spacing and alcove treatment (323, 234). Avoid trap spaces.

Shopfronts, lobbies, and loading doors often bunch together. Use near-door spacing and edgelines that prevent a vehicle from striking glass at low angle. Treat recesses and alcoves so they don’t become trap spaces. Align bollard rhythm to the façade grid to keep streetscape calm and readable.

At corners, combine a shallow corner chicane with tight pinch-point gaps. Protect keepers and sockets around keepered openings to preserve surface flushness for prams and trolleys.

819.6 Furniture & planting

Integrate benches/planters without masking gaps (238). Sleeves align with palette (366).

Street furniture can either help or harm. Use benches and planters to reinforce defend lines, but avoid masking projected gaps or creating blind corners. Coordinate finishes and color strategy so bollard sleeves sit comfortably in the palette. Where planters are structural, document mass, anchorage, and stability in the specification.

Keep user comfort: provide refuge pockets, seating intervals, and clear wayfinding. Cross-check with streetscape integration to maintain accessibility and cleaning access.

819.7 Events & markets

Pre-approved reconfigurations (239, 327). Stewarding plans reduce confusion (353).

Mixed-use streets often flip into event mode. Pre-approve temporary reconfigurations with maps that show island clusters, steward posts, and stewarded gates. Publish a reset-to-normal checklist and train teams on emergency modes & incident response.

Use portable chicanes and cones sparingly to avoid visual noise. Make signage & markings consistent with everyday operations so visitors aren’t asked to learn a new language for market days. Capture steward counts, marshal lines, and recovery windows in the event runbook.

819.8 Drainage & utilities

Tight corridors need shallow options (244, 241–243). Maintain outfalls (245).

Historic mains, shallow ducts, and basement crowns often limit depth. Where clashes are proven by utility detection, select shallow foundations or rail modules tested as a system. Keep drainage-first: sumps, weep holes, and outfalls must survive litter and storm pulses; plan drainage strategy with maintenance access in mind.

Document red-zone utilities, hand-dig zones, and permit sequences. If covers are within the array, specify keepered dimensions and anti-trip detailing so cleaning crews can lift, flush, and reseat safely after heavy rain.

819.9 Governance & review

SLAs, KPIs, and seasonal audits (738, 542, 728). Continuous tuning preserves crash rated bollard intent.

Operations keep streets safe as uses evolve. Set service levels & availability (uptime, response windows) and monitor with an operations dashboard tied to the KPI set. Run seasonal audits of gaps, signage, and steward plans; small drifts in layout or furniture can erode the original performance intent.

Record changes through a light site audit cadence and a simple change-control log. For UAE projects, ensure SIRA-related updates stay in step with actual operating hours and any new curbside uses (e-scooter parking, new kiosks, etc.).

819 Mixed-Use Precincts & Streets — FAQ