Page 43 - Trafficinfratech Magazine April 2023 Digital Edition

TRANSPORTATION PLANNING

building flyovers or widening analysis of the proposed Sankey the number of lanes, the speed
roads. This approach overlooks Road flyover and road widening limit, the geometry of the
important considerations, in Bengaluru, India, with respect roadway, and the presence of
leading to loopholes in to traffic congestion mitigation traffic control devices.
the planning process and potential as a case study. The V/C ratio is used to assess
ultimately failing to achieve The V/C ratio-”volume to the level of congestion on a
a long-term and sustainable capacity”- is a measure of traffic roadway or intersection. A V/C
mobility solution for the city. congestion that is commonly ratio greater than 1 indicates
The construction of such trivial used in transportation that the volume of traffic
projects requires significant planning. Capacity refers to the exceeds the capacity of the
resources, and investing such maximum number of vehicles roadway or intersection, which
a large amount into a solution that can be accommodated on suggests that there is likely to
that will only last for a few a roadway or intersection while be congestion and delays.
years or less is problematic.
maintaining an acceptable Transportation planners use
Case Study level of service. The capacity the V/C ratio to evaluate existing
of a roadway or intersection roadway conditions, forecast
This section presents a basic is affected by factors such as future traffic volumes, and
assess the impact of proposed
roadway improvements or
changes. The V/C ratio is one
of many performance measures
used in transportation
planning, and it is often used
in combination with other
measures such as travel time,
delay, and level of service to
assess the overall performance
of the transportation system.
Level of Service (LoS) and
V/C ratio of Multiple Divided
Urban Roads are taken from
Indo-HCM for analysis. The LoS
are: LoS A (V/C): <0.15, LoS B
(V/C): 0.15-0.45, LoS C (V/C):
0.46-0.75, LoS D (V/C): 0.76-
0.85, LoS E (V/C): 0.86-1.00
and LoS F (V/C): >1.00.
There are three options which
are presented in the detailed
project report (DPR) prepared
by BBMP for the ‘Widening of
Sankey road from Bhashyam
Circle to Malleshwaram 18th
Cross and Construction of
Flyover along the Sankey Road
in Malleshwaram Constituency’.

Option 1: 2 Lane Bi-directional
fly-over along Guttahalli main
Map location and simulated flyover image at Sankey Road road & Sankey road.

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