Webthe bx4 and bx4a constitute a public transit line along westchester avenue in the bronx, running between the hub or foxhurst and westchester square. Route description [ edit ] Enter an intersection, bus route or bus stop code. Webthe bx4 weekday schedule will improve to 15 minutes or better all day. The shortening of the bx4a frees up resources we will use to increase service frequency on both the bx4. Main st and kissena bl. Webbold times denote pm hours. Enter an intersection, bus route or bus stop code. Via metropolitan av / westchester av Effective june 26, 2022. For accessible subway stations,.