Research describes the effect of the on-street parking to the travel time of vehicle in crossing the road. The case study from this research is in the Jalan H. Agus Salim Jakarta Pusat, where the location is using the on street parking as the type of the parking system. Research method that we used is license plate method for travel time and parking characteristic survey. We used Manual Kapasitas Jalan Indonesia (MKJI) 1997 and linear regression as the based to calculate all the datas. To get the correlation between travel time and on-street parking, we used Correlation Test. With the value of $R > 0,8$ it means the relationship between travel time and on-street parking is very strong. And for the result of the relationship between travel time, flow and capacity we get $Y = 186,24 + 215,71 X$, with $a = 0,733$. The conclusion from this research is on street parking has strong influence on the travel time of the vehicle to get through to Jalan H. Agus Salim.