Checklist for Highway Design Deliverables

Checking and reviewing the design deliverables is quite important for quality assurance. The checklist for highway design deliverables provided in the following may not be exhaustive, but it will definitely help the senior design team members to perform their roles effectively.

General

Is the submission as per Project Brief’s requirements?

Has the quality checks been applied and QA sheet been properly signed off by the relevant officials?

Is there any departure from Standards involved and identified?

Has relevant stage of Road Safety Audit been carried out?

Have applicable CAD Standards/Manual been followed?

Has the design submission followed the applicable design Standards etc.?

Have the changes to the previous submissions (if applicable) clearly identified?

Have specifications been provided along with the plans?

Does the ‘legend’ on the drawings provide symbols for all items?

Do the ‘Notes’ on the drawings provide all relevant information?

Have the risks involved been identified and mitigating measures proposed?

Site Clearance Plans

Do the drawings indicate shaded or hatched area(s) for general site clearance?

Have the areas of different characters e.g. woodland been separately identified on the drawings.

Have the drawings clearly indicate any area of grassland or woodland, individual trees or shrub required to be preserved e.g. for re-use e.g. for landscaping purpose.

Has mode of disposing of the dismantle materials explained in the notes?

Have all disused soil, surface water drains, sewers, cables and ducts together with any bed or haunch or surround within 1 m of formation level shown to be removed or and over 1 m below formation to be left unless otherwise been indicated and explained?

Have all existing road markings and road studs (if applicable) on the existing carriageway been identified for removal.

Has any hazardous materials encountered on site been identified and its safe removal instructed?

Fencing Plans

Are following types of fencing required on site and proposed?

• Temporary Fencing (required during construction)
• Permanent Fencing
• Right of Way Fencing (to delineate and separate private property from the road reservation
• Animal Fencing (to prevent animals from entering the highway reservation. The size and type of fencing is dependent on the type of animal the fencing is intended to control, e.g. camel or goat)
• Acoustic Fencing (required in sensitive locations such as residential areas to lower the traffic noise level. The fence forms a barrier and the sound is reflected away from the sensitive area)
• Headlight Barriers (implemented at locations where it is desirable to minimise the glare of the headlights of oncoming vehicles, such as at unlit bends on rural roads.)

Pedestrian Access Fencing (may be required where there are significant numbers of pedestrians such as on commercial streets, outside schools or large sports complexes where crowds may gather. The fencing controls the movement of pedestrian traffic and lowers the risk of a pedestrian accidentally moving onto a live carriageway.)

Safety Fencing (A safety fence is a longitudinal barrier used to shield motorists from natural or man-made hazards located along a road.)

Has temporary fencing for site compound been provided?

Have field gates, posts and stiles indicated?

Have relevant ‘Typical Standard Details’ been provided and cross referred in the Notes.

Kerbs, Footways and Paved Areas

Have dropped kerbing been considered at appropriate locations?

Has the proper width of footways designed/proposed?

Have paved areas been properly designed for surface drainage?

Are the splitter islands enough in width for pedestrian, road signs’ erection etc.

Have the footways occasionally overrun by the vehicles been identified and indicated?

Have proper tactile paving provided on pedestrian crossings?

Have relevant ‘Typical Standard Details’ been provided and cross referred in the Notes.

Traffic Signs and Road Markings

Is design in accordance with the applicable manuals/Standards?

Has any non-standard signs been proposed?

Has cluttering of signs been avoided?

Do the locations of signs affect pedestrians and/or cyclists movement? Is headroom sufficient?

Do the locations of signs obstruct the visibility e.g. on the junctions?

Have speed limits signs been provided at locations where speed limits are changed?

Have speed limits repeater signs been provided, if applicable?

Have the ADS signs been agreed with the authorities and designed properly?

Have foundations and posts of signs been designed properly?

Are the signs visually intrusive (e.g. signs with backing plates)?

Have the mounting of signs on walls, railing etc. considered?

Have the signs been sited properly?

Are the sizes of signs as per speed limits of the road?

Have road markings been provided as per class of roads etc.?

Are road marking in according with the Traffic Regulation Orders (TROs)?

Have excessive lane widths been hatched off?

Have the lighting requirements for the signs provided?

Have speed roundel marking considered instead of speed limit signs?

Have tourists’ signs been considered only for major destinations?

Have warnings signs provided only where there is safety issue or hazard?

Have desired visibility of signs been provided?

Have road names/numbers signs been designed for urban roads?

General Layout Plans

Is the layout of roads and junctions in accordance with Traffic Study Report?

Has swept path analysis been carried out for junctions etc. using appropriate design vehicles?

Has visibility requirements been met?

Have pedestrian’ crossings been provided as per requirements?

Is the lane width adequate considering the types of traffic going to use the facility etc.?

Has proper weaving lengths been provided between two successive junctions?

Have proper lengths of diverge or merge tapers been provided?

Has the need of traffic calming looked into and been provided on low speed roads?

Has extra widening been provided on horizontal bends of urban roads?

Setting-Out Details

Has the minimum desirable longitudinal gradient been provided for surface drainage?

Has the minimum desirable length of vertical drainage been provided?

In urban areas, whether vertical profile have been designed keeping in view existing gate levels, drainage requirements and levels of connecting roads?

Has super-elevation been provided on horizontal curve on high speed roads?

Have all coordinates been provided on all important points e.g. on junctions etc.?

Are there any kinks in the profiles?

Have drainage requirements been considered in designing valley curves.

Have vertical curves been preferred rather than straight sections?

Have vertical and horizontal aspects been integrated?

Have side slopes/cross-falls been provided to ensure proper drainage?

Has proper tie-ins been provided with the adjoining roads?