REQUEST FOR PROPOSALS

measures for improvement should be suggested for implementation.
3. The data on accident statistics should be compiled and reported showing
accident type and frequency so that black spots are identified along the project
road section. The possible causes (such as poor geometric features, pavement
condition etc.) of accidents should be investigated into and suitable costeffective
remedial measures suggested for implementation.
4. The detailed design for geometric elements shall cover, but not be limited to the
following major aspects:
i. horizontal alignment;
ii. longitudinal profile;
iii. Cross-sectional elements, including refuge lane (50m) at every 2kms.
iv. junctions, intersections and interchanges;
v. bypasses; and,
vi. Service roads as and when require i.e. built up area..
5. The alignment design shall be verified for available sight distances as per the
standard norms. The provision of appropriate markings and signs shall be
made wherever the existing site conditions do not permit the adherence to the
sight distance requirements as per the standard norms.
6. The Consultants shall make detailed analysis of traffic flow and level of service
for the existing road and workout the traffic flow capacity for the improved
project road. The analysis should clearly establish the widening (2/4-laning)
requirements with respect to the different horizon periods taking into account
special problems such as road segments with isolated steep gradients.
7. In the case of closely spaced cross roads, the Consultant shall examine different
options such as, providing grade separated structure for some of them with a
view to reduce number of at-grade crossings, services roads connecting the
cross-roads and closing access from some of the intersections and prepare and
furnish appropriate proposals for this purpose keeping in view the cost of
improvement, impact on traffic movement and accessibility to cross roads. The
detailed drawings and cost estimate should include the provisions for
realignments of the existing cross roads to allow such arrangements.
8. The Consultant shall also prepare design of grade separated pedestrian
crossings (viaducts) for large cross traffic of pedestrians and / or animals.
9. The Consultant shall also prepare details for at-grade junctions, which may be
adopted as alternative to the grade separated structures. The geometric design
of interchanges shall take into account the site conditions, turning movement
characteristics, level of service, overall economy and operational safety.
10. The Consultants shall prepare design and other details in respect of the parallel
service roads in urbanized locations and other locations to cater to the local
traffic, their effect of the viability of the project on commercial basis if service
roads are constructed as part of the project and the implications of not
providing the service roads.
11. The Consultant shall prepare complete road and pavement design including
drainage for new bypass option identified around congested town enroute.
12.