|Technical standards and executive specifications of road components and elements in Riyadh city|
|Type of work||Preparation of technical standards|
A brief overview of the work
Riyadh Municipality issued the technical standards and executive specifications of road components and elements in Riyadh. It consists of three guides; each guide consists of several parts with a total of eight parts (volumes). These guides were intended to achieve the following:
- Comprehensiveness in terms of the elements and components of urban roads, especially roads in Riyadh
- Ease of use - to a large extent - to contain examples and indicative designs to help the engineer to apply the guides' contents easily
- Full coordination with all relevant authorities of the city's road network during roads preparation so that these guides have taken into account the requirements of these authorities.
- Unifying the standards and executive specifications of the roads that are implemented on the city roads so as to help achieve the required homogeneity of the road network
- The basis of specific criteria for the city and so that the outputs of the various studies done in the city on the road components are added periodically through the issuance of successive editions of these guides after adding these results to them
These guides are :
Guide of cross-sections elements of streets and roads, consisting of a guide and an annex :
- Guide of cross-sections elements of streets and roads
- Annex of cross-sections elements of streets and roads
Guide of the horizontal planes for streets and roads, consists of four parts:
- Part 1: Traffic facilities for road links
- Part 2: Guidance examples of surface intersections
- Part 3: Parking facilities
- Part 4: Pedestrian facilities
Guide of street and road equipment, consisting of two parts:
- Part 1: Traffic Control Equipment
- Part 2: Service Equipment, where it addresses
The parts of each guide are wrapped in a distinctive color; the green color was selected for the guide of cross-sections elements of streets and roads, the brown color for the guide of the horizontal planes of streets and roads and the blue color for the guide of the streets and roads equipment. These guides are also grouped into a single volume to easily extract any part of it. Below are brief details of the guides and its various parts.
The first guide
(Cross sections elements of streets and roads) It consists of a guide and an annex. This guide deals with the technical standards and operational specifications of the cross-section elements of streets and roads in particular, and the values and limits that have been used in preparing the typical cross-sections of streets and roads. A set of typical street and road segments has been developed according to the street widths commonly used in the new plans, and according to the category of these functional streets. Typical cross-sections included in this guide have been developed specifically for new streets and roads. As for the existing streets and roads, some of the elements presented in this guide can be used when there will be some improvements to be made, depending on the nature of each site separately. As for the annex of this guide, it contains details of the elements of cross-sections of streets and roads, including the minimum and maximum values of some elements that can be used in special cases, when the conditions of the site do not allow the implementation of the typical cross-sections provided in the guide, but after the approval of the competent authorities.
The second guide
(Horizontal planes guide for streets and roads) Consists of four parts
Car traffic facilities for road links, including acceleration and deceleration paths, U-turn slots, entry and exit slots to and from service roads, free road entrances and exits, off-road car parking entrances and exits, underground and multi-storey car parking entrances and exits, and ATM entrances and exits, in addition to the entrances and exits of gas stations
Guidance examples of intersections, where many of the three guides' outputs were used in the preparation of guidance examples for some cases of intersections, according to different street widths, in addition to providing the determinants of the designs of circular (roundabout) intersection, according to different cases of traffic densities and the number of lanes.
Parking facilities, for parks on both sides of the road, bus stops on both sides of the road, and off-road surface parking, multi-storey parking in addition to the special needs' parking.
Pedestrian facilities, this section included an introduction to the general characteristics of pedestrians, and then address pedestrians' sidewalks and passages, pedestrian crossings and pedestrian crossings isolated from vehicles, in addition to the requirements of special needs citizens in the design of sidewalks.
The third guide
(Streets and roads equipment guide) It consists of two parts
It is specialized in traffic control equipment, and deals with standards for traffic control equipment, starting with traffic lights, traffic signs, ground signs, as well as speed bumps, pedestrian safety barriers and side signs, to some precautions to control traffic near work areas.
It is specialized in services equipment, which includes: lampposts and accessories, waste boxes and containers, mail boxes, telephone booths and public transport stations' sunshades, billboards and various advertising means, trees, plants and plantation basins, in addition to landscape such as: fountains, disks, bike racks, fire hydrants, entrances to buildings and shops, and finally drinking water units (refrigerators).
Thanks to God, these guides appeared in 1426 H (2005 G), to be applied by all the bodies working in the city of Riyadh in this area. In spite of the great effort and diligence that the team has done to execute these guides, some observations are likely to appear, as in any human effort.