The National Academies Press

Currently Skimming:

Pages 168-182

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.

From page 168... ... 168 Motorist Information Strategies Motorist information strategies provide road users with current or real-time information regarding the project work zone. This section covers three motorist information strategies: • Speed feedback signs • Construction truck entering and exiting system • Real-time travel system 10.1 Speed Feedback Signs 10.1.1 Description Speed feedback signs are electronic signs that use vehicle speed-sensing technology to detect and display a vehicle's current speed to the driver. Read the entire page →
From page 169... ... Motorist Information Strategies 169 • When the mean speeds or 85th percentile speeds exceed the PSL by at least 10 mph. • When hazardous roadway conditions, such as a temporary unusually tight curve or a rough road surface, which require extra driving precautions, are present. Read the entire page →
From page 170... ... 170 Strategies for Work Zone Transportation Management Plans – 3.7 mph reduction in mean speeds (Meyer 2003) Read the entire page →
From page 171... ... Motorist Information Strategies 171 10.1.7 Design Features and Requirements Each time a speed feedback sign is set up, the speed measuring device must be checked and adjusted (if necessary) to ensure accuracy. Read the entire page →
From page 172... ... 172 Strategies for Work Zone Transportation Management Plans Edara, P., C Read the entire page →
From page 173... ... Motorist Information Strategies 173 vehicle is entering or exiting a work zone. When a traffic sensor detects a construction vehicle either entering or exiting, motorists are alerted of a truck slowing down or entering the flow of traffic via either a PCMS or flashing static signs. Read the entire page →
From page 174... ... 174 Strategies for Work Zone Transportation Management Plans 10.2.3 Benefits The use of a construction truck entering and exiting system provides the following benefits: • Alerting motorists of slow construction vehicles entering and exiting the work zone. • Reducing the frequency of motorists following construction vehicles into the work zone. Read the entire page →
From page 175... ... Motorist Information Strategies 175 cities -- Denver and Colorado Springs. On average, nearly 80,000 vehicles travel the I-25 South Gap corridor daily with delays and crashes a common occurrence. Read the entire page →
From page 176... ... 176 Strategies for Work Zone Transportation Management Plans TxDOT. Smart Work Zone Guidelines: Design Guidelines for Deployment of Work Zone Intelligent Transportation Systems (ITS) Read the entire page →
From page 177... ... Motorist Information Strategies 177 In general, the system would display a message to travelers that, from their current location, it will take X minutes to reach a given location ahead of them (e.g., Hwy 23/25 miles/35 mins) Read the entire page →
From page 178... ... 178 Strategies for Work Zone Transportation Management Plans 10.3.5 Crash Modification Factor No CMF is applicable for this strategy. 10.3.6 Implementation Considerations The following aspects might also be considered when deploying RTTS: • DOTs can integrate RTTS with a regional TMC or other state and project websites. Read the entire page →
From page 179... ... Motorist Information Strategies 179 • Agencies will need to perform comprehensive testing of the system. • An RTTS may also be supplemented with other informational devices such as a highway advisory radio. Read the entire page →
From page 180... ... 180 Strategies for Work Zone Transportation Management Plans in traffic congestion along I-210, I-10, and the area surrounding Lake Charles. Twenty-three PCMSs that contained alternative route messages, travel time messages, or both -- positioned 2 to 20 mi before the actual work zone -- were deployed on this project. Read the entire page →
From page 181... ... Motorist Information Strategies 181 displayed real-time travel times to motorists. The RTTS was in operation 24/7 with updates to the travel time signs occurring every 5 minutes. Read the entire page →
From page 182... ... 182 Strategies for Work Zone Transportation Management Plans Hourdos, J Evaluation of the Smart Work Zone Speed Notification System, Minnesota Department of Transportation, June 2019. Read the entire page →

From page 168...

... 168 Motorist Information Strategies Motorist information strategies provide road users with current or real-time information regarding the project work zone. This section covers three motorist information strategies: • Speed feedback signs • Construction truck entering and exiting system • Real-time travel system 10.1 Speed Feedback Signs 10.1.1 Description Speed feedback signs are electronic signs that use vehicle speed-sensing technology to detect and display a vehicle's current speed to the driver.