Sembawang town currently has 6 trunk services 167, 856, 859,
962, 980 and 981. As for Choa Chu Kang town, currently it has 8
trunk services 67, 172, 188, 190, 925, 927, 975 and 985.
And yes, they are trunk services no matter the length of the routes
or whether they operate at peak hours or not.