TY  - JOUR
PY  - 2011//
TI  - New three-dimensional highway design methodology for sight distance measurement
JO  - Transportation research record
A1  - Jha, Manoj K.
A1  - Karri, Gautham Anand Kumar
A1  - Kuhn, Wolfgang
SP  - 74
EP  - 82
VL  - 2262
IS  - 
N2  - The traditional two-stage highway design process provides separate processing of horizontal and vertical alignments. One drawback of the two-stage methodology, however, is design inconsistency because of drivers' responses that are not detected until the road is built. To remedy this situation, a three-dimensional (3-D) design methodology has been developed to eliminate the need for postchecking to ensure design consistency and availability of adequate sight distance. With the proposed 3-D design methodology, planners and designers can simulate the entire design process at the onset. The paper presents a novel 3-D algorithm for calculating sight distance on the basis of the proposed 3-D design methodology. A case study demonstrates the applicability of the methodology.<p />
LA  - en
SN  - 0361-1981
UR  - http://dx.doi.org/10.3141/2262-08
ID  - ref1
ER  -