85 
 
References: 
 
1. ADB Sector Paper – Sri Lanka country assistance program evaluation, 
Transport  Sector – August 2002 
2. ADB report on proposed loan and technical assistance grant for the 
southern provincial roads improvement project - October 1997 
3. Axle load survey guide lines – Technical paper presented by Transport 
Research Laboratory in 2000. 
4. Christopher R. Bennett, Data collection technologies for road management 
– May 2006. 
5. Ellis C. I. – Pavement engineering in developing countries in 1979. 
6. Overseas Road Note 31 (Fourth Edition) – A guide to the structural design 
of bitumen surfaced roads in tropical and sub tropical countries, 1993 
7. Overseas Road Note 40 – Optimum axle loads of commercial vehicles in 
developing countries. 
8. Road Development Authority – A guide to the structural design of roads 
under Sri Lankan conditions 
9. Road Development Authority – Road Maintenance Manual, 1989 
10. Rolt J. Optimum axles loads of commercial vehicles in developing 
countries 
11. World Bank – Sri Lanka Road sector policy review note, December 2003