The ratio of economic indicators of the BHR to the EwEC might, perhaps be overestimated. The population of Bangkok is 5,844.6 thousand people, its GRP is 42,173.4 and these account for 17.6% and 64.0% of the summarized values for provinces along the BHR, respectively, but the iength of the BHR in Bangkok city is a mere 7.6 km, or 0.5% of the total distance.