Speed {SRMData} | R Documentation |
Speed of vehicles
Description
Speeds of vehicles before and after adding additional signage.
Usage
data(Speed)
Format
A data frame with 79 rows (each vehicle) and 2 columns:
- When
When the speed is measured; one of
Before
orAfter
new signage added- Speed
The measured speed, in km/h
Source
Ma, Yongfeng, Wenbo Zhang, Xin Gu, and Jiguang Zhao. 2019. Impacts of Experimental Advisory Exit Speed Sign on Traffic Speeds for Freeway Exit Ramp. PLoS One 14 (11):e0225203
[Package SRMData version 1.0.1 Index]