can only be applied if we have 'twenty four hours' and sixty minutes' exact figures to select from , for making a 'conditon of filter' , technically speaking...
here we do not have 'minutes to filter' and minimum filteration in round digits only.
secondly : if modification of program is done to the effect, that Search results automatically pic up the 'min time' and 'max time' then only search results viz-a-viz 'filter of travel' time becomes Relevant....
Hence suitable modification needs to be done , as it is deemed fit.
This will enhance user satisfactin index ...