Impact Factor (2025): 6.9
DOI Prefix: 10.47001/IRJIET
Geospatial
data describe objects and things with relation to geographic space often with
location coordinate in a spatial referenced system. Rural roads are geospatial
entities which can be captured and stored using geographic information system
techniques. Therefore, a geographic information system is an essential tool to
be placed on comprehending the information of spatial and non-spatial data over
space and time. Data required for this paper include high resolution satellite
imageries (QuickBird, SPOTS, IKONOS), Landsat (EOI Hyperion, DEM); local,
state, and international boundaries; all Edges of transport routes connecting
all settlements in the state, settlement data, stream network data, and terrain
data. Roads associated attributes include location of potholes, bumps,
drainages, drainage direction, and last date of road repaired, highest point,
lowest point, mean elevation, maximum slope, average slope, road tears and
wears which is expressed as roads condition. Road geometry data involve length
of each road edge, width, and referential measurement. Data on nature of
surfacing such as tar, asphalt, concrete, and laterite. Other data on roads are
name, type, classification, and Geotagged pictures and video of all roads in
Adamawa state. The field survey involves trailing the whole length of the roads
from a referenced baseline at a vehicle speed using GPS Waypoint Navigators,
handheld GPSs, and RoadLab application in iPad. These devices were used in
collecting data on roads roughness index expressed as good, bad, excellent;
visual assessment of road conditions and drainages were carried out during the
field survey. When navigating the roads records taking of roads data, geotagged
pictures, videos, and coordinates of event areas were captured. However, the
use of RoadLab in assessing road conditions was only limited to Trunk a, b, and
c roads across the state since they are the most tarred roads in regional road
classification. Therefore, rigorous physical/visual surveys and assessment on
all other rural roads were conducted. The result of the research indicate that
trunk b, c and feeder roads are in bad shape and geospatial database of all
road network in Adamawa State was developed.
Country : Nigeria
IRJIET, Volume 8, Issue 8, August 2024 pp. 221-231