08-08-2012, 05:44 AM
Dear Members,
In 3 aspect signalling, the maximum signal spacing "d" is calculated by using following formula
d = ((Vh x Vt) - (Sd + O + L)) / 2
some times the calculated value "d" is exceeding the value 1.5BD. If the value d exceeding 1.5BD then risk assessment is required.
My doubt is whether I have to use 1.5BD or d for maximum signal spacing.
Kindly clarify.
Regards,
NJK
'
In 3 aspect signalling, the maximum signal spacing "d" is calculated by using following formula
d = ((Vh x Vt) - (Sd + O + L)) / 2
some times the calculated value "d" is exceeding the value 1.5BD. If the value d exceeding 1.5BD then risk assessment is required.
My doubt is whether I have to use 1.5BD or d for maximum signal spacing.
Kindly clarify.
Regards,
NJK
'