With　the　development　of　cities　and　the　continuous　progress　of　people＇s　lives,　more　and　more　cities　have　become　congested.　Many　methods　of　estimating　vehicle　speed　have　been　proposed　for　travel　convenience,　but　these　methods　have　large　errors　and　low　accuracy.　Currently,　a　method　for　evaluating　the　error　of　estimated　vehicle　speed　is　highly　needed.　A　method　for　estimating　handoff-based　travel　spend　error　is　highlighted　in　this　paper.　The　result　shows　that　the　probability　distribution　of　handoff　locations　errors　is　closed　relative　to　normal　distribution.　Given　the　data,　the　mean　squared　error　(MSE)　of　the　estimated　travel　distance　between　two　locations　can　be　quickly　calculated.　Moreover,　the　relation　between　the　cumulative　distribution　function　(CDF)　and　the　cumulative　distribution　function　of　normal　distribution　(CDFND)　is　in　a　98%　confidence　interval.　©　2022　IEEE.