The impacts of differential speed limits on speed - Details

Author：

Liu, Shicui (Liu, Shicui.) | Sun, Xiaoduan (Sun, Xiaoduan.) | He, Yulong (He, Yulong.) | Hou, Shuzhan (Hou, Shuzhan.)

Indexed by：

EI Scopus

Abstract：

Design　speed　is　generally　used　as　a　basis　for　determining　the　post　speed　limits　in　China.　Therefore　the　fixed　value　becomes　the　post　speed　for　the　whole　road.　Because　of　the　big　difference　in　operational　characteristics　between　cars　and　trucks,　this　method　is　clearly　inappropriate,　considering　the　effects　of　Differential　Speed　Limits　(DSL)　are　controversial.　This　paper　expatiates　the　advantages　and　disadvantages　of　DSL,　using　hypothesis　testing　and　analysis　of　variance　methods　(ANOVA)　to　analyze　the　difference　of　15th　percentile　speed,　85th　percentile　speed,　mean　speed,　speed　variance,　speed　limit　compliance　between　DSL　and　USL　(uniform　speed　limit).　Finally,　consider　truck　mixed　rate　and　traffic　volume　as　variables　to　establish　a　linear　regression　model　between　speed　limit　differences　and　speed　statistical　indicators.　©　2009　ASCE.

Keyword：

Digital subscriber lines Trucks Analysis of variance (ANOVA) Speed Regression analysis

Author Community：

[ 1 ] [Liu, Shicui]Key Lab. of Transportation Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Sun, Xiaoduan]Key Lab. of Transportation Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [He, Yulong]Key Lab. of Transportation Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Hou, Shuzhan]Key Lab. of Transportation Engineering, Beijing University of Technology, Beijing, 100124, China