Billboard Dimensions Demystified: A Format-By-Format Handbook For Planners, Designers And Buyers

Every outdoor campaign eventually hits the same question: what size is this site, really? The answer is rarely as simple as the rate card suggests.

Formats share names but not dimensions. A “unipole” from one owner can be noticeably larger than one from another, and a digital screen’s physical size tells a designer almost nothing useful.

This handbook is organised by environment rather than format, starting with the highway and working inward to malls, stations and moving vehicles. For each, you’ll find common sizes, shapes, viewing conditions and design rules.

The Quick Reference

For readers who just need a number, here are the most common conventions. Everything below explains why these figures shift.

Highway And Roadside

Standard billboard — typically 20′ x 60′
Spectacular — typically 40′ x 60′ or larger
Unipole — typically 20′ x 60′ or 30′ x 60′
Gantry — typically around 20′ x 80′, depending on carriageway width
Overhead bridge panel — typically 10′ to 15′ x 60′

Street And Pedestrian

Bus shelter panel — around 1.2 m x 1.8 m
Lamp post bunting — around 2′ x 5′ to 3′ x 7′
Digital totem — 49″ to 55″ portrait at 1,080 x 1,920 pixels
Mall standee — commonly 55″ portrait

How To Read A Billboard Size Properly

Most costly production errors come from misreading dimensions, not from bad design. Four habits prevent nearly all of them.

Check The Order Of The Numbers

Malaysian rate cards usually quote height first, then width. International briefs often reverse this. A 20′ x 60′ board built as 60′ high is an expensive mistake.

Separate Face From Frame

Quoted sizes sometimes describe the whole structure. The printable, visible area is smaller once borders, lighting arms and fixing points are deducted.

Confirm The Unit

One rate card might mix feet, inches and millimetres across different sites. Convert everything to one unit before comparing sites or briefing a designer.

For Digital, Ignore Physical Size

A designer building digital artwork needs the native pixel resolution. Two screens of identical physical size can have very different pixel counts.

Ask whether dimensions are height x width or width x height
Request the visible area, not just the structure size
Get bleed and safe-zone specs per site
Confirm the measurement unit before any conversion
For LED, request resolution and pixel pitch

Part One: The Highway

Highway formats are built for speed and distance. Drivers see them from far away, for a short time, while concentrating on the road. Every size decision flows from that.

Gantries: Directly Overhead

A gantry spans the full expressway, placing the advertising face straight above the lanes. There is no angle to overcome; drivers look directly at it throughout the approach.

15′ x 60′ — narrower expressways
20′ x 80′ — a common multi-lane format
20′ x 100′ — very wide carriageways
Width follows the road itself, so every gantry can differ

The extreme width suits wide horizontal visuals with the message centred. Many are now digital, so check whether you need a print file or a video file.

Unipoles: Height Over Everything

A single steel column lifts the face above trees, rooftops and traffic. That elevation buys much longer viewing distance than any ground-mounted board.

20′ x 60′ — the most common face size
30′ x 60′ — larger expressway structures
20′ x 40′ — urban and secondary road versions
40′ x 80′ — flagship highway unipoles

Unipoles come in single, back-to-back, V-shaped and three-sided configurations. Each face may need its own artwork if traffic approaches from different directions.

Keep key elements off the bottom edge, where brackets and lighting often intrude when viewed from below.

Spectaculars: The Premium Tier

Spectaculars are defined as much by location as by size. They occupy the sites with the longest, clearest approach and the fewest competing distractions.

40′ x 60′ — the most common Malaysian spectacular
30′ x 90′ — ultra-wide expressway formats
40′ x 80′ — landmark structures
50′ x 100′ and above — rare flagship sites

Use the extra space to make one message larger, not to fit a second message in. More canvas means more impact, not more words.

Highway Digital Screens

Expressway LED screens are built to be read from far away, which is why they often run at surprisingly low resolutions.

22′ x 44′ — often around 672 x 1,344 pixels
31.5′ x 63′ — often around 600 x 1,200 pixels
60′ x 40′ portrait — often around 1,824 x 1,248 pixels
Pixel pitch commonly sits at P16 to P20 for long-distance viewing

Part Two: The City Road

Urban roadside formats are viewed from closer, at lower speeds, often by traffic stopped at lights. That opens up slightly more room for detail.

Standard Roadside Billboards

The format most people picture when they hear “billboard”. A flat face on a steel frame beside the road.

20′ x 60′ — the dominant format, running at a 1:3 ratio
20′ x 40′ — urban and secondary roads
15′ x 40′ — tighter sites
10′ x 40′ — low-profile residential areas
10′ x 20′ — compact junction boards

The long 1:3 shape favours a horizontal layout: logo at one end, headline across the middle, product or call to action at the other.

Overhead Bridge Panels

Mounted on pedestrian bridges crossing main roads, these panels face oncoming traffic head-on, much like a small gantry.

10′ x 60′ — standard static panels
12′ x 60′ — deeper formats
15′ x 60′ — common digital versions
Digital resolutions often around 384–448 pixels high by 1,792–1,824 pixels wide

At roughly 1:4 to 1:5, these are among the widest common formats. Existing landscape visuals rarely translate well without redesign.

Urban Digital Screens

City screens sit closer to viewers, so they generally carry finer pixel pitch and sharper images than highway screens.

20′ x 40′ landscape — typical city roadside screen
30′ x 20′ portrait — often around 864 x 576 pixels
38′ x 25′ portrait — often around 720 x 480 pixels
Pixel pitch commonly around P8 to P10

Rooftop Billboards

Mounted on building roofs, visible across the skyline and from flyovers and elevated roads.

20′ x 60′ — common rooftop face
30′ x 60′ — larger city-centre sites
40′ x 80′ — landmark rooftops

These are frequently seen against open sky, so avoid pale blue or white backgrounds that disappear on bright days.

Building Wraps And Wall Banners

The least standardised format of all, since every building is different. Sizes are dictated entirely by the facade.

40′ x 60′ — mid-sized facades
50′ x 70′ — office towers
60′ x 100′ and above — full wraps
Portrait orientation is common on tall, narrow buildings

High-rise wraps typically use mesh vinyl, which reduces wind load but softens colour. Window coverings use perforated film so occupants can still see out.

Part Three: The Street

At street level, audiences are pedestrians and slow traffic. Viewing distance drops to a few metres, and design rules change completely.

Lamp Post Buntings

Vertical banners on street lamp posts, usually running in long sequences along a road.

2′ x 5′ — small street buntings
2.5′ x 6′ — common municipal size
3′ x 7′ — main road buntings
Usually portrait and double-sided

Digital e-bunting panels are commonly around 2,048 mm by 1,024 mm with low native resolution. Keep creative to a logo and a handful of words.

Repetition beats variety here. The same design on every post builds recall far better than a different message on each.

Bus Shelters And Street Furniture

Backlit panels built into shelters, kiosks and walkways. These are read by people standing still, close up.

1.2 m x 1.8 m — the international six-sheet standard
1.0 m x 1.5 m — smaller street furniture
1.5 m x 2.0 m — larger shelter panels

This is the format where QR codes, offers and detail genuinely work, because people are waiting and within easy reading distance.

Part Four: Transit

Rail stations and transit hubs deliver dwell time. Passengers wait, walk slowly and check screens, which allows more complex creative than any roadside site.

Station Formats

Six-sheet lightboxes — around 1.2 m x 1.8 m on platforms and concourses
Digital totems — typically 49″ to 55″ portrait at 1,080 x 1,920 pixels
Platform wall panels — wide landscape formats along platform edges
Station domination — walls, pillars and floors across a whole station

Train Formats

Full train wraps — sized to each carriage model
Partial wraps — panels between doors and windows
In-car cards — small panels above windows

Digital totems run at 9:16, identical to a phone screen, so vertical social content often adapts with minimal rework. Audio is almost always muted.

Airport Formats

Airports combine long dwell time with high-value audiences, and formats are sized to each terminal’s architecture.

Check-in bulkheads — extremely wide, shallow strips
Hall wall graphics — sized to each wall
Entrance and concourse lightboxes
Baggage carousel graphics
Glass panel wraps along concourse windows

Bulkheads can exceed 1:25 in ratio. Almost nothing adapts to that shape, so budget for a dedicated layout.

Part Five: Indoors

Malls and indoor venues are viewed at close range under artificial light, with shoppers in no particular hurry.

Mall Formats

Digital standees — commonly 55″ portrait
Lightboxes — often wide landscape panels above walkways
Pillar wraps — sized to each column
Escalator and travelator panels — long, narrow side strips
Atrium hanging banners
Lift door wraps — sized to each door set

Close viewing exposes print flaws instantly. Supply higher-resolution files for indoor formats than you would for any roadside site.

Part Six: On The Move

Mobile formats travel to the audience rather than waiting for it. Size is capped by vehicle dimensions and road rules.

Truck-side panels — commonly around 3 m x 6 m
Mobile LED trucks — screens often around 2 m x 3 m to 3 m x 5 m
Car-top LED screens — compact displays on e-hailing and taxi roofs
Vehicle wraps — sized to the specific make and model

Always request the manufacturer’s vehicle template. Doors, handles, windows and body curves all interrupt the design surface.

Understanding LED Pixel Pitch

Pixel pitch is the spacing between LED clusters in millimetres. It determines how sharp a screen looks at a given distance.

P3 to P6 — indoor and close-range screens
P8 to P10 — urban roadside
P16 to P20 — highways and long-distance viewing

Lower pitch means sharper images and higher cost. A huge highway screen with modest resolution is not a flaw; at that distance, fine detail simply isn’t visible.

International Standards For Adapting Global Creative

Global campaigns often arrive built for UK or US formats. Knowing the ratios helps judge how much adaptation is needed.

United Kingdom

6-sheet — 1.2 m x 1.8 m, portrait
48-sheet — 3.05 m x 6.1 m, roughly 1:2
96-sheet — 3.05 m x 12.19 m, roughly 1:4

United States

Bulletin — 14′ x 48′, roughly 1:3.4
30-sheet poster — roughly 10′ x 23′
8-sheet junior poster — roughly 6′ x 12′

A US bulletin sits close to the Malaysian 1:3 standard and adapts fairly easily. A UK 48-sheet at 1:2 needs substantial reworking.

Legibility: Matching Size To Distance

A billboard’s size only means something relative to how far away the viewer is and how fast they’re travelling.

Speed Sets The Time Limit

At 90 km/h, a car covers roughly 25 metres per second. A board visible from 200 metres offers about eight seconds of viewing, much of it peripheral.

Design Rules That Hold Across Formats

Letter height must grow with viewing distance
Bold sans-serif fonts outperform serif and script at range
Contrast matters more than colour — dark on light or light on dark
Roadside copy should stay at around seven words or fewer
Pedestrian formats can carry detail, offers and QR codes

Production Specs That Save Money

Resolution

Full-scale billboard artwork typically needs only 15 to 30 dpi. Most designers work at a reduced scale such as 1:10 and supply higher dpi files. Agree the scale with the printer first.

Bleed And Safe Areas

Bleed extends artwork past the trim line to avoid white edges
Safe areas keep logos and text clear of frames and fixings
Both vary by media owner, so request them for every site

Files And Colour

CMYK for print, RGB for digital
Print files as high-quality PDF, TIFF or EPS with fonts outlined
Digital files as JPEG, PNG or MP4 at native resolution
Check maximum file size and slot length for digital sites

The Mistakes That Cost The Most

Reversing height and width when building artwork
Designing to the structure size rather than the visible face
Stretching landscape creative onto portrait screens
Fine text on low-resolution LED
Missing bleed, leaving white borders on installation
Key content hidden behind frames or lighting brackets
Assuming same format name means same size

Final Word

Billboard sizes are conventions shaped by owners, councils and physical sites, not fixed industry standards. Treat every figure here as a reliable starting point, then confirm the exact numbers for each booking.

Designers who build for the specific frame, distance and resolution consistently produce better work than those adapting one master visual everywhere. Fit the creative to the format, and the format will do the rest.