a. congestion has made traveling in Phnom Penh harder,
b. road improvement seems related to increasing traffic fatalities (no proof provided),
c. accidents occur due to the construction of concrete dividers.
He then suggests that wider roads will lead to less congestion, but fails to delve on the issue brought forward i.e. relation between road improvement projects and increasing fatalities. In the end the letter is very ineffective, the writer fails to bring good arguments: more road gives only temporary reprieve from congestion, there is more need for public transport / mass transport systems. Possibly the problems are as of now not problematic enough...