Citation

Agrawal K. Indian Highw. 2001; 29(10): 11-14.

Copyright

(Copyright © 2001, Indian Roads Congress)

DOI

unavailable

PMID

unavailable

Abstract

The conflict between the height of a transport structure and the aesthetic effects of the additional length of the structure is discussed particularly with reference to urban areas. A one-metre increase in height can lead to a 60-m increase in length. Lower transport structures are also cheaper to construct, require less fuel when in use, create less pollution and have lower visual impact. A vertical clearance of 4.2m is adequate for all vehicles except double decker buses. Changes in the design of double decker buses to lower them to 4.0m height (as in Europe) would improve safety and solve this problem. A height of 4.5m vertical clearance is proposed for introduction in 3-5 years' time.