30m

60m

120m

180m

to increase it on descending grades and to decrease it on ascending grades

to decrease it on descending grades and to increase it on ascending grades

to increase it on both descending and ascending grades

to decrease it on both descending and ascending grades

60 kmph

80 kmph

100 kmph

120 kmph

upto 10%

between 10% and 25%

between 25% and 60%

more than 60%

less than b/2h and greater than co-efficient of lateral friction

less than b/2h and also less than co-efficient of lateral friction

greater than b/2h and less than co-efficient of lateral friction

greater than b/2h and also greater than coefficient of lateral friction